diff options
author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/board/kosagi | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/board/kosagi')
-rw-r--r-- | roms/u-boot/board/kosagi/novena/Kconfig | 12 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/MAINTAINERS | 6 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/Makefile | 10 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/novena.c | 233 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/novena.h | 32 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/novena_spl.c | 599 | ||||
-rw-r--r-- | roms/u-boot/board/kosagi/novena/video.c | 460 |
7 files changed, 1352 insertions, 0 deletions
diff --git a/roms/u-boot/board/kosagi/novena/Kconfig b/roms/u-boot/board/kosagi/novena/Kconfig new file mode 100644 index 000000000..c5cbaabe6 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/Kconfig @@ -0,0 +1,12 @@ +if TARGET_KOSAGI_NOVENA + +config SYS_BOARD + default "novena" + +config SYS_VENDOR + default "kosagi" + +config SYS_CONFIG_NAME + default "novena" + +endif diff --git a/roms/u-boot/board/kosagi/novena/MAINTAINERS b/roms/u-boot/board/kosagi/novena/MAINTAINERS new file mode 100644 index 000000000..d3471c2d6 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/MAINTAINERS @@ -0,0 +1,6 @@ +NOVENA BOARD +M: Marek Vasut <marex@denx.de> +S: Maintained +F: board/kosagi/novena/ +F: include/configs/novena.h +F: configs/novena_defconfig diff --git a/roms/u-boot/board/kosagi/novena/Makefile b/roms/u-boot/board/kosagi/novena/Makefile new file mode 100644 index 000000000..64d32f5a9 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2014 Marek Vasut <marex@denx.de> + +ifdef CONFIG_SPL_BUILD +obj-y := novena_spl.o +else +obj-y := novena.o +obj-$(CONFIG_VIDEO_IPUV3) += video.o +endif diff --git a/roms/u-boot/board/kosagi/novena/novena.c b/roms/u-boot/board/kosagi/novena/novena.c new file mode 100644 index 000000000..0e1b4a0a4 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/novena.c @@ -0,0 +1,233 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Novena board support + * + * Copyright (C) 2014 Marek Vasut <marex@denx.de> + */ + +#include <common.h> +#include <dm.h> +#include <eeprom.h> +#include <init.h> +#include <log.h> +#include <asm/global_data.h> +#include <dm/device-internal.h> +#include <ahci.h> +#include <env.h> +#include <linux/errno.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mxc_hdmi.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/mach-imx/sata.h> +#include <asm/mach-imx/video.h> +#include <dwc_ahsata.h> +#include <fsl_esdhc_imx.h> +#include <i2c.h> +#include <input.h> +#include <ipu_pixfmt.h> +#include <linux/fb.h> +#include <linux/input.h> +#include <malloc.h> +#include <mmc.h> +#include <netdev.h> +#include <power/pmic.h> +#include <power/pfuze100_pmic.h> +#include <stdio_dev.h> +#include <video_console.h> + +#include "novena.h" + +DECLARE_GLOBAL_DATA_PTR; + +/* + * GPIO button + */ +#ifdef CONFIG_KEYBOARD +static struct input_config button_input; + +static int novena_gpio_button_read_keys(struct input_config *input) +{ + int key = KEY_ENTER; + if (gpio_get_value(NOVENA_BUTTON_GPIO)) + return 0; + input_send_keycodes(&button_input, &key, 1); + return 1; +} + +static int novena_gpio_button_getc(struct stdio_dev *dev) +{ + return input_getc(&button_input); +} + +static int novena_gpio_button_tstc(struct stdio_dev *dev) +{ + return input_tstc(&button_input); +} + +static int novena_gpio_button_init(struct stdio_dev *dev) +{ + gpio_direction_input(NOVENA_BUTTON_GPIO); + input_set_delays(&button_input, 250, 250); + return 0; +} + +int drv_keyboard_init(void) +{ + int error; + struct stdio_dev dev = { + .name = "button", + .flags = DEV_FLAGS_INPUT, + .start = novena_gpio_button_init, + .getc = novena_gpio_button_getc, + .tstc = novena_gpio_button_tstc, + }; + + gpio_request(NOVENA_BUTTON_GPIO, "button"); + + error = input_init(&button_input, 0); + if (error) { + debug("%s: Cannot set up input\n", __func__); + return -1; + } + input_add_tables(&button_input, false); + button_input.read_keys = novena_gpio_button_read_keys; + + error = input_stdio_register(&dev); + if (error) + return error; + + return 0; +} +#endif + +int board_early_init_f(void) +{ +#if defined(CONFIG_VIDEO_IPUV3) + setup_display_clock(); +#endif + + return 0; +} + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + return 0; +} + +int board_late_init(void) +{ +#if defined(CONFIG_VIDEO_IPUV3) + struct udevice *con; + char buf[DISPLAY_OPTIONS_BANNER_LENGTH]; + int ret; + + setup_display_lvds(); + + ret = uclass_get_device(UCLASS_VIDEO_CONSOLE, 0, &con); + if (ret) + return ret; + + display_options_get_banner(false, buf, sizeof(buf)); + vidconsole_position_cursor(con, 0, 0); + vidconsole_put_string(con, buf); +#endif + return 0; +} + +int checkboard(void) +{ + puts("Board: Novena 4x\n"); + return 0; +} + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + return 0; +} + +/* setup board specific PMIC */ +int power_init_board(void) +{ + struct pmic *p; + u32 reg; + int ret; + + power_pfuze100_init(1); + p = pmic_get("PFUZE100"); + if (!p) + return -EINVAL; + + ret = pmic_probe(p); + if (ret) + return ret; + + pmic_reg_read(p, PFUZE100_DEVICEID, ®); + printf("PMIC: PFUZE100 ID=0x%02x\n", reg); + + /* Set SWBST to 5.0V and enable (for USB) */ + pmic_reg_read(p, PFUZE100_SWBSTCON1, ®); + reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK); + reg |= (SWBST_5_00V | (SWBST_MODE_AUTO << SWBST_MODE_SHIFT)); + pmic_reg_write(p, PFUZE100_SWBSTCON1, reg); + + return 0; +} + +/* EEPROM configuration data */ +struct novena_eeprom_data { + uint8_t signature[6]; + uint8_t version; + uint8_t reserved; + uint32_t serial; + uint8_t mac[6]; + uint16_t features; +}; + +int misc_init_r(void) +{ + struct novena_eeprom_data data; + uchar *datap = (uchar *)&data; + const char *signature = "Novena"; + int ret; + + /* If 'ethaddr' is already set, do nothing. */ + if (env_get("ethaddr")) + return 0; + + /* EEPROM is at bus 2. */ + ret = i2c_set_bus_num(2); + if (ret) { + puts("Cannot select EEPROM I2C bus.\n"); + return 0; + } + + /* EEPROM is at address 0x56. */ + ret = eeprom_read(0x56, 0, datap, sizeof(data)); + if (ret) { + puts("Cannot read I2C EEPROM.\n"); + return 0; + } + + /* Check EEPROM signature. */ + if (memcmp(data.signature, signature, 6)) { + puts("Invalid I2C EEPROM signature.\n"); + return 0; + } + + /* Set ethernet address from EEPROM. */ + eth_env_set_enetaddr("ethaddr", data.mac); + + return ret; +} diff --git a/roms/u-boot/board/kosagi/novena/novena.h b/roms/u-boot/board/kosagi/novena/novena.h new file mode 100644 index 000000000..f62f3f7b8 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/novena.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Novena board support + * + * Copyright (C) 2014 Marek Vasut <marex@denx.de> + */ + +#ifndef __BOARD_KOSAGI_NOVENA_NOVENA_H__ +#define __BOARD_KOSAGI_NOVENA_NOVENA_H__ + +#define NOVENA_AUDIO_PWRON IMX_GPIO_NR(5, 17) +#define NOVENA_BACKLIGHT_PWM_GPIO IMX_GPIO_NR(4, 29) +#define NOVENA_BACKLIGHT_PWR_GPIO IMX_GPIO_NR(4, 15) +#define NOVENA_BUTTON_GPIO IMX_GPIO_NR(4, 14) +#define NOVENA_FPGA_RESET_N_GPIO IMX_GPIO_NR(5, 7) +#define NOVENA_HDMI_GHOST_HPD IMX_GPIO_NR(5, 4) +#define NOVENA_ITE6251_PWR_GPIO IMX_GPIO_NR(5, 28) +#define NOVENA_PCIE_DISABLE_GPIO IMX_GPIO_NR(2, 16) +#define NOVENA_PCIE_POWER_ON_GPIO IMX_GPIO_NR(7, 12) +#define NOVENA_PCIE_RESET_GPIO IMX_GPIO_NR(3, 29) +#define NOVENA_PCIE_WAKE_UP_GPIO IMX_GPIO_NR(3, 22) +#define NOVENA_SD_CD IMX_GPIO_NR(1, 4) +#define NOVENA_SD_WP IMX_GPIO_NR(1, 2) + +#define NOVENA_IT6251_I2C_BUS 2 +#define NOVENA_IT6251_CHIPADDR 0x5c +#define NOVENA_IT6251_LVDSADDR 0x5e + +void setup_display_clock(void); +void setup_display_lvds(void); + +#endif /* __BOARD_KOSAGI_NOVENA_NOVENA_H__ */ diff --git a/roms/u-boot/board/kosagi/novena/novena_spl.c b/roms/u-boot/board/kosagi/novena/novena_spl.c new file mode 100644 index 000000000..3d22f2019 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/novena_spl.c @@ -0,0 +1,599 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Novena SPL + * + * Copyright (C) 2014 Marek Vasut <marex@denx.de> + */ + +#include <common.h> +#include <clock_legacy.h> +#include <init.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mx6-ddr.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/gpio.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/arch/crm_regs.h> +#include <i2c.h> +#include <mmc.h> +#include <fsl_esdhc_imx.h> +#include <spl.h> +#include <linux/delay.h> + +#include <asm/arch/mx6-ddr.h> + +#include "novena.h" + +#define UART_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define USDHC_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ + PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) + +#define ENET_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define ENET_PHY_CFG_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_22K_UP | PAD_CTL_HYS) + +#define RGMII_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define SPI_PAD_CTRL \ + (PAD_CTL_HYS | \ + PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) + +#define I2C_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \ + PAD_CTL_DSE_240ohm | PAD_CTL_HYS | \ + PAD_CTL_ODE) + +#define BUTTON_PAD_CTRL \ + (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) + +/* + * Audio + */ +static iomux_v3_cfg_t audio_pads[] = { + /* AUD_PWRON */ + MX6_PAD_DISP0_DAT23__GPIO5_IO17 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_audio(void) +{ + imx_iomux_v3_setup_multiple_pads(audio_pads, ARRAY_SIZE(audio_pads)); + gpio_direction_output(NOVENA_AUDIO_PWRON, 1); +} + +/* + * ENET + */ +static iomux_v3_cfg_t enet_pads1[] = { + MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL), + + /* pin 35, PHY_AD2 */ + MX6_PAD_RGMII_RXC__GPIO6_IO30 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + /* pin 32, MODE0 */ + MX6_PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + /* pin 31, MODE1 */ + MX6_PAD_RGMII_RD1__GPIO6_IO27 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + /* pin 28, MODE2 */ + MX6_PAD_RGMII_RD2__GPIO6_IO28 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + /* pin 27, MODE3 */ + MX6_PAD_RGMII_RD3__GPIO6_IO29 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + /* pin 33, CLK125_EN */ + MX6_PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(ENET_PHY_CFG_PAD_CTRL), + + /* pin 42 PHY nRST */ + MX6_PAD_EIM_D23__GPIO3_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static iomux_v3_cfg_t enet_pads2[] = { + MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(RGMII_PAD_CTRL), + MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(RGMII_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_enet(void) +{ + imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1)); + + /* Assert Ethernet PHY nRST */ + gpio_direction_output(IMX_GPIO_NR(3, 23), 0); + + /* + * Use imx6 internal pull-ups to drive PHY mode pins during PHY reset + * de-assertion. The intention is to use weak signal drivers (pull-ups) + * to prevent the conflict between PHY pins becoming outputs after + * reset and imx6 still driving the pins. The issue is described in PHY + * datasheet, p.14 + */ + gpio_direction_input(IMX_GPIO_NR(6, 30)); /* PHY_AD2 = 1 */ + gpio_direction_input(IMX_GPIO_NR(6, 25)); /* MODE0 = 1 */ + gpio_direction_input(IMX_GPIO_NR(6, 27)); /* MODE1 = 1 */ + gpio_direction_input(IMX_GPIO_NR(6, 28)); /* MODE2 = 1 */ + gpio_direction_input(IMX_GPIO_NR(6, 29)); /* MODE3 = 1 */ + gpio_direction_input(IMX_GPIO_NR(6, 24)); /* CLK125_EN = 1 */ + + /* Following reset timing (p.53, fig.8 from the PHY datasheet) */ + mdelay(10); + + /* De-assert Ethernet PHY nRST */ + gpio_set_value(IMX_GPIO_NR(3, 23), 1); + + /* PHY is now configured, connect FEC to the pads */ + imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2)); + + /* + * PHY datasheet recommends on p.53 to wait at least 100us after reset + * before using MII, so we enforce the delay here + */ + udelay(100); +} + +/* + * FPGA + */ +static iomux_v3_cfg_t fpga_pads[] = { + /* FPGA_RESET_N */ + MX6_PAD_DISP0_DAT13__GPIO5_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_fpga(void) +{ + imx_iomux_v3_setup_multiple_pads(fpga_pads, ARRAY_SIZE(fpga_pads)); + gpio_direction_output(NOVENA_FPGA_RESET_N_GPIO, 0); +} + +/* + * GPIO Button + */ +static iomux_v3_cfg_t button_pads[] = { + /* Debug */ + MX6_PAD_KEY_COL4__GPIO4_IO14 | MUX_PAD_CTRL(BUTTON_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_buttons(void) +{ + imx_iomux_v3_setup_multiple_pads(button_pads, ARRAY_SIZE(button_pads)); +} + +/* + * I2C + */ +/* + * I2C1: + * 0x1d ... MMA7455L + * 0x30 ... SO-DIMM temp sensor + * 0x44 ... STMPE610 + * 0x50 ... SO-DIMM ID + */ +struct i2c_pads_info i2c_pad_info0 = { + .scl = { + .i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC, + .gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC, + .gp = IMX_GPIO_NR(3, 21) + }, + .sda = { + .i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC, + .gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC, + .gp = IMX_GPIO_NR(3, 28) + } +}; + +/* + * I2C2: + * 0x08 ... PMIC + * 0x3a ... HDMI DCC + * 0x50 ... HDMI DCC + */ +static struct i2c_pads_info i2c_pad_info1 = { + .scl = { + .i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC, + .gpio_mode = MX6_PAD_EIM_EB2__GPIO2_IO30 | PC, + .gp = IMX_GPIO_NR(2, 30) + }, + .sda = { + .i2c_mode = MX6_PAD_EIM_D16__I2C2_SDA | PC, + .gpio_mode = MX6_PAD_EIM_D16__GPIO3_IO16 | PC, + .gp = IMX_GPIO_NR(3, 16) + } +}; + +/* + * I2C3: + * 0x11 ... ES8283 + * 0x50 ... LCD EDID + * 0x56 ... EEPROM + */ +static struct i2c_pads_info i2c_pad_info2 = { + .scl = { + .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC, + .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC, + .gp = IMX_GPIO_NR(3, 17) + }, + .sda = { + .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC, + .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC, + .gp = IMX_GPIO_NR(3, 18) + } +}; + +static void novena_spl_setup_iomux_i2c(void) +{ + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0); + setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2); +} + +/* + * PCI express + */ +#ifdef CONFIG_CMD_PCI +static iomux_v3_cfg_t pcie_pads[] = { + /* "Reset" pin */ + MX6_PAD_EIM_D29__GPIO3_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* "Power on" pin */ + MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* "Wake up" pin (input) */ + MX6_PAD_EIM_D22__GPIO3_IO22 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* "Disable endpoint" (rfkill) pin */ + MX6_PAD_EIM_A22__GPIO2_IO16 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_pcie(void) +{ + imx_iomux_v3_setup_multiple_pads(pcie_pads, ARRAY_SIZE(pcie_pads)); + + /* Ensure PCIe is powered down */ + gpio_direction_output(NOVENA_PCIE_POWER_ON_GPIO, 0); + + /* Put the card into reset */ + gpio_direction_output(NOVENA_PCIE_RESET_GPIO, 0); + + /* Input signal to wake system from mPCIe card */ + gpio_direction_input(NOVENA_PCIE_WAKE_UP_GPIO); + + /* Drive RFKILL high, to ensure the radio is turned on */ + gpio_direction_output(NOVENA_PCIE_DISABLE_GPIO, 1); +} +#else +static inline void novena_spl_setup_iomux_pcie(void) {} +#endif + +/* + * SDHC + */ +static iomux_v3_cfg_t usdhc2_pads[] = { + MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */ + MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */ +}; + +static iomux_v3_cfg_t usdhc3_pads[] = { + MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_sdhc(void) +{ + imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); + imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads)); + + /* Big SD write-protect and card-detect */ + gpio_direction_input(IMX_GPIO_NR(1, 2)); + gpio_direction_input(IMX_GPIO_NR(1, 4)); +} + +/* + * SPI + */ +#ifdef CONFIG_MXC_SPI +static iomux_v3_cfg_t ecspi3_pads[] = { + /* SS1 */ + MX6_PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT3__GPIO4_IO24 | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT4__GPIO4_IO25 | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT5__GPIO4_IO26 | MUX_PAD_CTRL(SPI_PAD_CTRL), + MX6_PAD_DISP0_DAT7__ECSPI3_RDY | MUX_PAD_CTRL(SPI_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_spi(void) +{ + imx_iomux_v3_setup_multiple_pads(ecspi3_pads, ARRAY_SIZE(ecspi3_pads)); + /* De-assert the nCS */ + gpio_direction_output(MX6_PAD_DISP0_DAT3__GPIO4_IO24, 1); + gpio_direction_output(MX6_PAD_DISP0_DAT4__GPIO4_IO25, 1); + gpio_direction_output(MX6_PAD_DISP0_DAT5__GPIO4_IO26, 1); +} +#else +static void novena_spl_setup_iomux_spi(void) {} +#endif + +/* + * UART + */ +static iomux_v3_cfg_t const uart2_pads[] = { + MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const uart3_pads[] = { + MX6_PAD_EIM_D24__UART3_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_EIM_D25__UART3_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const uart4_pads[] = { + MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_CSI0_DAT16__UART4_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL), + MX6_PAD_CSI0_DAT17__UART4_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL), + +}; + +static void novena_spl_setup_iomux_uart(void) +{ + imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads)); + imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads)); + imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads)); +} + +/* + * Video + */ +#ifdef CONFIG_VIDEO +static iomux_v3_cfg_t hdmi_pads[] = { + /* "Ghost HPD" pin */ + MX6_PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), + + /* LCD_PWR_CTL */ + MX6_PAD_CSI0_DAT10__GPIO5_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* LCD_BL_ON */ + MX6_PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL), + /* GPIO_PWM1 */ + MX6_PAD_DISP0_DAT8__GPIO4_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static void novena_spl_setup_iomux_video(void) +{ + imx_iomux_v3_setup_multiple_pads(hdmi_pads, ARRAY_SIZE(hdmi_pads)); + gpio_direction_input(NOVENA_HDMI_GHOST_HPD); +} +#else +static inline void novena_spl_setup_iomux_video(void) {} +#endif + +/* + * SPL boots from uSDHC card + */ +#ifdef CONFIG_FSL_ESDHC_IMX +static struct fsl_esdhc_cfg usdhc_cfg = { + USDHC3_BASE_ADDR, 0, 4 +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + /* There is no CD for a microSD card, assume always present. */ + return 1; +} + +int board_mmc_init(struct bd_info *bis) +{ + usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); + return fsl_esdhc_initialize(bis, &usdhc_cfg); +} +#endif + +/* Configure MX6Q/DUAL mmdc DDR io registers */ +static struct mx6dq_iomux_ddr_regs novena_ddr_ioregs = { + /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */ + .dram_sdclk_0 = 0x00020038, + .dram_sdclk_1 = 0x00020038, + .dram_cas = 0x00000038, + .dram_ras = 0x00000038, + .dram_reset = 0x00000038, + /* SDCKE[0:1]: 100k pull-up */ + .dram_sdcke0 = 0x00000038, + .dram_sdcke1 = 0x00000038, + /* SDBA2: pull-up disabled */ + .dram_sdba2 = 0x00000000, + /* SDODT[0:1]: 100k pull-up, 40 ohm */ + .dram_sdodt0 = 0x00000038, + .dram_sdodt1 = 0x00000038, + /* SDQS[0:7]: Differential input, 40 ohm */ + .dram_sdqs0 = 0x00000038, + .dram_sdqs1 = 0x00000038, + .dram_sdqs2 = 0x00000038, + .dram_sdqs3 = 0x00000038, + .dram_sdqs4 = 0x00000038, + .dram_sdqs5 = 0x00000038, + .dram_sdqs6 = 0x00000038, + .dram_sdqs7 = 0x00000038, + + /* DQM[0:7]: Differential input, 40 ohm */ + .dram_dqm0 = 0x00000038, + .dram_dqm1 = 0x00000038, + .dram_dqm2 = 0x00000038, + .dram_dqm3 = 0x00000038, + .dram_dqm4 = 0x00000038, + .dram_dqm5 = 0x00000038, + .dram_dqm6 = 0x00000038, + .dram_dqm7 = 0x00000038, +}; + +/* Configure MX6Q/DUAL mmdc GRP io registers */ +static struct mx6dq_iomux_grp_regs novena_grp_ioregs = { + /* DDR3 */ + .grp_ddr_type = 0x000c0000, + .grp_ddrmode_ctl = 0x00020000, + /* Disable DDR pullups */ + .grp_ddrpke = 0x00000000, + /* ADDR[00:16], SDBA[0:1]: 40 ohm */ + .grp_addds = 0x00000038, + /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */ + .grp_ctlds = 0x00000038, + /* DATA[00:63]: Differential input, 40 ohm */ + .grp_ddrmode = 0x00020000, + .grp_b0ds = 0x00000038, + .grp_b1ds = 0x00000038, + .grp_b2ds = 0x00000038, + .grp_b3ds = 0x00000038, + .grp_b4ds = 0x00000038, + .grp_b5ds = 0x00000038, + .grp_b6ds = 0x00000038, + .grp_b7ds = 0x00000038, +}; + +static struct mx6_mmdc_calibration novena_mmdc_calib = { + /* write leveling calibration determine */ + .p0_mpwldectrl0 = 0x00420048, + .p0_mpwldectrl1 = 0x006f0059, + .p1_mpwldectrl0 = 0x005a0104, + .p1_mpwldectrl1 = 0x01070113, + /* Read DQS Gating calibration */ + .p0_mpdgctrl0 = 0x437c040b, + .p0_mpdgctrl1 = 0x0413040e, + .p1_mpdgctrl0 = 0x444f0446, + .p1_mpdgctrl1 = 0x044d0422, + /* Read Calibration: DQS delay relative to DQ read access */ + .p0_mprddlctl = 0x4c424249, + .p1_mprddlctl = 0x4e48414f, + /* Write Calibration: DQ/DM delay relative to DQS write access */ + .p0_mpwrdlctl = 0x42414641, + .p1_mpwrdlctl = 0x46374b43, +}; + +static struct mx6_ddr_sysinfo novena_ddr_info = { + /* Width of data bus: 0=16, 1=32, 2=64 */ + .dsize = 2, + /* Config for full 4GB range so that get_mem_size() works */ + .cs_density = 32, /* 32Gb per CS */ + /* Single chip select */ + .ncs = 1, + .cs1_mirror = 0, + .rtt_wr = 0, /* RTT_Wr = RZQ/4 */ + .rtt_nom = 1, /* RTT_Nom = RZQ/2 */ + .walat = 0, /* Write additional latency */ + .ralat = 5, /* Read additional latency */ + .mif3_mode = 3, /* Command prediction working mode */ + .bi_on = 1, /* Bank interleaving enabled */ + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ +}; + +static struct mx6_ddr3_cfg elpida_4gib_1600 = { + .mem_speed = 1600, + .density = 4, + .width = 64, + .banks = 8, + .rowaddr = 16, + .coladdr = 10, + .pagesz = 2, + .trcd = 1375, + .trcmin = 4875, + .trasmin = 3500, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0x00C03F3F, &ccm->CCGR0); + writel(0x0030FC03, &ccm->CCGR1); + writel(0x0FFFC000, &ccm->CCGR2); + writel(0x3FF00000, &ccm->CCGR3); + writel(0xFFFFF300, &ccm->CCGR4); + writel(0x0F0000C3, &ccm->CCGR5); + writel(0x000003FF, &ccm->CCGR6); +} + +/* + * called from C runtime startup code (arch/arm/lib/crt0.S:_main) + * - we have a stack and a place to store GD, both in SRAM + * - no variable global data is available + */ +void board_init_f(ulong dummy) +{ + /* setup AIPS and disable watchdog */ + arch_cpu_init(); + + ccgr_init(); + gpr_init(); + + /* setup GP timer */ + timer_init(); + +#ifdef CONFIG_BOARD_POSTCLK_INIT + board_postclk_init(); +#endif +#ifdef CONFIG_FSL_ESDHC_IMX + get_clocks(); +#endif + + /* Setup IOMUX and configure basics. */ + novena_spl_setup_iomux_audio(); + novena_spl_setup_iomux_buttons(); + novena_spl_setup_iomux_enet(); + novena_spl_setup_iomux_fpga(); + novena_spl_setup_iomux_i2c(); + novena_spl_setup_iomux_pcie(); + novena_spl_setup_iomux_sdhc(); + novena_spl_setup_iomux_spi(); + novena_spl_setup_iomux_uart(); + novena_spl_setup_iomux_video(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + /* Start the DDR DRAM */ + mx6dq_dram_iocfg(64, &novena_ddr_ioregs, &novena_grp_ioregs); + mx6_dram_cfg(&novena_ddr_info, &novena_mmdc_calib, &elpida_4gib_1600); + + /* Perform DDR DRAM calibration */ + udelay(100); + mmdc_do_write_level_calibration(&novena_ddr_info); + mmdc_do_dqs_calibration(&novena_ddr_info); +} diff --git a/roms/u-boot/board/kosagi/novena/video.c b/roms/u-boot/board/kosagi/novena/video.c new file mode 100644 index 000000000..a96a877f5 --- /dev/null +++ b/roms/u-boot/board/kosagi/novena/video.c @@ -0,0 +1,460 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Novena video output support + * + * IT6251 code based on code Copyright (C) 2014 Sean Cross + * from https://github.com/xobs/novena-linux.git commit + * 3d85836ee1377d445531928361809612aa0a18db + * + * Copyright (C) 2014 Marek Vasut <marex@denx.de> + */ + +#include <common.h> +#include <log.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mxc_hdmi.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/mach-imx/video.h> +#include <i2c.h> +#include <input.h> +#include <ipu_pixfmt.h> +#include <linux/fb.h> +#include <linux/input.h> +#include <malloc.h> +#include <stdio_dev.h> + +#include "novena.h" + +#define IT6251_VENDOR_ID_LOW 0x00 +#define IT6251_VENDOR_ID_HIGH 0x01 +#define IT6251_DEVICE_ID_LOW 0x02 +#define IT6251_DEVICE_ID_HIGH 0x03 +#define IT6251_SYSTEM_STATUS 0x0d +#define IT6251_SYSTEM_STATUS_RINTSTATUS (1 << 0) +#define IT6251_SYSTEM_STATUS_RHPDSTATUS (1 << 1) +#define IT6251_SYSTEM_STATUS_RVIDEOSTABLE (1 << 2) +#define IT6251_SYSTEM_STATUS_RPLL_IOLOCK (1 << 3) +#define IT6251_SYSTEM_STATUS_RPLL_XPLOCK (1 << 4) +#define IT6251_SYSTEM_STATUS_RPLL_SPLOCK (1 << 5) +#define IT6251_SYSTEM_STATUS_RAUXFREQ_LOCK (1 << 6) +#define IT6251_REF_STATE 0x0e +#define IT6251_REF_STATE_MAIN_LINK_DISABLED (1 << 0) +#define IT6251_REF_STATE_AUX_CHANNEL_READ (1 << 1) +#define IT6251_REF_STATE_CR_PATTERN (1 << 2) +#define IT6251_REF_STATE_EQ_PATTERN (1 << 3) +#define IT6251_REF_STATE_NORMAL_OPERATION (1 << 4) +#define IT6251_REF_STATE_MUTED (1 << 5) + +#define IT6251_REG_PCLK_CNT_LOW 0x57 +#define IT6251_REG_PCLK_CNT_HIGH 0x58 + +#define IT6521_RETRY_MAX 20 + +static int it6251_is_stable(void) +{ + const unsigned int caddr = NOVENA_IT6251_CHIPADDR; + const unsigned int laddr = NOVENA_IT6251_LVDSADDR; + int status; + int clkcnt; + int rpclkcnt; + int refstate; + + rpclkcnt = (i2c_reg_read(caddr, 0x13) & 0xff) | + ((i2c_reg_read(caddr, 0x14) << 8) & 0x0f00); + debug("RPCLKCnt: %d\n", rpclkcnt); + + status = i2c_reg_read(caddr, IT6251_SYSTEM_STATUS); + debug("System status: 0x%02x\n", status); + + clkcnt = (i2c_reg_read(laddr, IT6251_REG_PCLK_CNT_LOW) & 0xff) | + ((i2c_reg_read(laddr, IT6251_REG_PCLK_CNT_HIGH) << 8) & + 0x0f00); + debug("Clock: 0x%02x\n", clkcnt); + + refstate = i2c_reg_read(laddr, IT6251_REF_STATE); + debug("Ref Link State: 0x%02x\n", refstate); + + if ((refstate & 0x1f) != 0) + return 0; + + /* If video is muted, that's a failure */ + if (refstate & IT6251_REF_STATE_MUTED) + return 0; + + if (!(status & IT6251_SYSTEM_STATUS_RVIDEOSTABLE)) + return 0; + + return 1; +} + +static int it6251_ready(void) +{ + const unsigned int caddr = NOVENA_IT6251_CHIPADDR; + + /* Test if the IT6251 came out of reset by reading ID regs. */ + if (i2c_reg_read(caddr, IT6251_VENDOR_ID_LOW) != 0x15) + return 0; + if (i2c_reg_read(caddr, IT6251_VENDOR_ID_HIGH) != 0xca) + return 0; + if (i2c_reg_read(caddr, IT6251_DEVICE_ID_LOW) != 0x51) + return 0; + if (i2c_reg_read(caddr, IT6251_DEVICE_ID_HIGH) != 0x62) + return 0; + + return 1; +} + +static void it6251_program_regs(void) +{ + const unsigned int caddr = NOVENA_IT6251_CHIPADDR; + const unsigned int laddr = NOVENA_IT6251_LVDSADDR; + + i2c_reg_write(caddr, 0x05, 0x00); + mdelay(1); + + /* set LVDSRX address, and enable */ + i2c_reg_write(caddr, 0xfd, 0xbc); + i2c_reg_write(caddr, 0xfe, 0x01); + + /* + * LVDSRX + */ + /* This write always fails, because the chip goes into reset */ + /* reset LVDSRX */ + i2c_reg_write(laddr, 0x05, 0xff); + i2c_reg_write(laddr, 0x05, 0x00); + + /* reset LVDSRX PLL */ + i2c_reg_write(laddr, 0x3b, 0x42); + i2c_reg_write(laddr, 0x3b, 0x43); + + /* something with SSC PLL */ + i2c_reg_write(laddr, 0x3c, 0x08); + /* don't swap links, but writing reserved registers */ + i2c_reg_write(laddr, 0x0b, 0x88); + + /* JEIDA, 8-bit depth 0x11, orig 0x42 */ + i2c_reg_write(laddr, 0x2c, 0x01); + /* "reserved" */ + i2c_reg_write(laddr, 0x32, 0x04); + /* "reserved" */ + i2c_reg_write(laddr, 0x35, 0xe0); + /* "reserved" + clock delay */ + i2c_reg_write(laddr, 0x2b, 0x24); + + /* reset LVDSRX pix clock */ + i2c_reg_write(laddr, 0x05, 0x02); + i2c_reg_write(laddr, 0x05, 0x00); + + /* + * DPTX + */ + /* set for two lane mode, normal op, no swapping, no downspread */ + i2c_reg_write(caddr, 0x16, 0x02); + + /* some AUX channel EDID magic */ + i2c_reg_write(caddr, 0x23, 0x40); + + /* power down lanes 3-0 */ + i2c_reg_write(caddr, 0x5c, 0xf3); + + /* enable DP scrambling, change EQ CR phase */ + i2c_reg_write(caddr, 0x5f, 0x06); + + /* color mode RGB, pclk/2 */ + i2c_reg_write(caddr, 0x60, 0x02); + /* dual pixel input mode, no EO swap, no RGB swap */ + i2c_reg_write(caddr, 0x61, 0x04); + /* M444B24 video format */ + i2c_reg_write(caddr, 0x62, 0x01); + + /* vesa range / not interlace / vsync high / hsync high */ + i2c_reg_write(caddr, 0xa0, 0x0F); + + /* hpd event timer set to 1.6-ish ms */ + i2c_reg_write(caddr, 0xc9, 0xf5); + + /* more reserved magic */ + i2c_reg_write(caddr, 0xca, 0x4d); + i2c_reg_write(caddr, 0xcb, 0x37); + + /* enhanced framing mode, auto video fifo reset, video mute disable */ + i2c_reg_write(caddr, 0xd3, 0x03); + + /* "vidstmp" and some reserved stuff */ + i2c_reg_write(caddr, 0xd4, 0x45); + + /* queue number -- reserved */ + i2c_reg_write(caddr, 0xe7, 0xa0); + /* info frame packets and reserved */ + i2c_reg_write(caddr, 0xe8, 0x33); + /* more AVI stuff */ + i2c_reg_write(caddr, 0xec, 0x00); + + /* select PC master reg for aux channel? */ + i2c_reg_write(caddr, 0x23, 0x42); + + /* send PC request commands */ + i2c_reg_write(caddr, 0x24, 0x00); + i2c_reg_write(caddr, 0x25, 0x00); + i2c_reg_write(caddr, 0x26, 0x00); + + /* native aux read */ + i2c_reg_write(caddr, 0x2b, 0x00); + /* back to internal */ + i2c_reg_write(caddr, 0x23, 0x40); + + /* voltage swing level 3 */ + i2c_reg_write(caddr, 0x19, 0xff); + /* pre-emphasis level 3 */ + i2c_reg_write(caddr, 0x1a, 0xff); + + /* start link training */ + i2c_reg_write(caddr, 0x17, 0x01); +} + +static int it6251_init(void) +{ + const unsigned int caddr = NOVENA_IT6251_CHIPADDR; + int reg; + int tries, retries = 0; + + for (retries = 0; retries < IT6521_RETRY_MAX; retries++) { + /* Program the chip. */ + it6251_program_regs(); + + /* Wait for video stable. */ + for (tries = 0; tries < 100; tries++) { + reg = i2c_reg_read(caddr, 0x17); + /* Test Link CFG, STS, LCS read done. */ + if ((reg & 0xe0) != 0xe0) { + /* Not yet, wait a bit more. */ + mdelay(2); + continue; + } + + /* Test if the video input is stable. */ + if (it6251_is_stable()) + return 0; + } + /* + * If we couldn't stabilize, requeue and try again, + * because it means that the LVDS channel isn't + * stable yet. + */ + printf("Display didn't stabilize.\n"); + printf("This may be because the LVDS port is still in powersave mode.\n"); + mdelay(50); + } + + return -EINVAL; +} + +static void enable_hdmi(struct display_info_t const *dev) +{ + imx_enable_hdmi_phy(); +} + +static int lvds_enabled; + +static void enable_lvds(struct display_info_t const *dev) +{ + if (lvds_enabled) + return; + + /* ITE IT6251 power enable. */ + gpio_request(NOVENA_ITE6251_PWR_GPIO, "ite6251-power"); + gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 0); + mdelay(10); + gpio_direction_output(NOVENA_ITE6251_PWR_GPIO, 1); + mdelay(20); + lvds_enabled = 1; +} + +static int detect_lvds(struct display_info_t const *dev) +{ + int ret, loops = 250; + + enable_lvds(dev); + + ret = i2c_set_bus_num(NOVENA_IT6251_I2C_BUS); + if (ret) { + puts("Cannot select IT6251 I2C bus.\n"); + return 0; + } + + /* Wait up-to ~250 mS for the LVDS to come up. */ + while (--loops) { + ret = it6251_ready(); + if (ret) + return ret; + + mdelay(1); + } + + return 0; +} + +struct display_info_t const displays[] = { + { + /* HDMI Output */ + .bus = -1, + .addr = 0, + .pixfmt = IPU_PIX_FMT_RGB24, + .detect = detect_hdmi, + .enable = enable_hdmi, + .mode = { + .name = "HDMI", + .refresh = 60, + .xres = 1024, + .yres = 768, + .pixclock = 15384, + .left_margin = 220, + .right_margin = 40, + .upper_margin = 21, + .lower_margin = 7, + .hsync_len = 60, + .vsync_len = 10, + .sync = FB_SYNC_EXT, + .vmode = FB_VMODE_NONINTERLACED + }, + }, { + /* LVDS Output: N133HSE-EA1 Rev. C1 */ + .bus = -1, + .pixfmt = IPU_PIX_FMT_RGB24, + .detect = detect_lvds, + .enable = enable_lvds, + .mode = { + .name = "Chimei-FHD", + .refresh = 60, + .xres = 1920, + .yres = 1080, + .pixclock = 15384, + .left_margin = 148, + .right_margin = 88, + .upper_margin = 36, + .lower_margin = 4, + .hsync_len = 44, + .vsync_len = 5, + .sync = FB_SYNC_HOR_HIGH_ACT | + FB_SYNC_VERT_HIGH_ACT | + FB_SYNC_EXT, + .vmode = FB_VMODE_NONINTERLACED, + }, + }, +}; + +size_t display_count = ARRAY_SIZE(displays); + +static void enable_vpll(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + int timeout = 100000; + + setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN); + + clrsetbits_le32(&ccm->analog_pll_video, + BM_ANADIG_PLL_VIDEO_DIV_SELECT | + BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT, + BF_ANADIG_PLL_VIDEO_DIV_SELECT(37) | + BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1)); + + writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num); + writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom); + + clrbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN); + + while (timeout--) + if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK) + break; + if (timeout < 0) + printf("Warning: video pll lock timeout!\n"); + + clrsetbits_le32(&ccm->analog_pll_video, + BM_ANADIG_PLL_VIDEO_BYPASS, + BM_ANADIG_PLL_VIDEO_ENABLE); +} + +void setup_display_clock(void) +{ + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; + + enable_ipu_clock(); + enable_vpll(); + imx_setup_hdmi(); + + /* Turn on IPU LDB DI0 clocks */ + setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK); + + /* Switch LDB DI0 to PLL5 (Video PLL) */ + clrsetbits_le32(&mxc_ccm->cs2cdr, + MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK, + (0 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)); + + /* LDB clock div by 3.5 */ + clrbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV); + + /* DI0 clock derived from ldb_di0_clk */ + clrsetbits_le32(&mxc_ccm->chsccdr, + MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK, + (CHSCCDR_CLK_SEL_LDB_DI0 << + MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET) + ); + + /* Enable both LVDS channels, both connected to DI0. */ + writel(IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_HIGH | + IOMUXC_GPR2_BIT_MAPPING_CH1_JEIDA | + IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT | + IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA | + IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT | + IOMUXC_GPR2_SPLIT_MODE_EN_MASK | + IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0 | + IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0, + &iomux->gpr[2]); + + clrsetbits_le32(&iomux->gpr[3], + IOMUXC_GPR3_LVDS0_MUX_CTL_MASK | + IOMUXC_GPR3_LVDS1_MUX_CTL_MASK, + (IOMUXC_GPR3_MUX_SRC_IPU1_DI0 << + IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET) | + (IOMUXC_GPR3_MUX_SRC_IPU1_DI0 << + IOMUXC_GPR3_LVDS1_MUX_CTL_OFFSET) + ); +} + +void setup_display_lvds(void) +{ + int ret; + + ret = i2c_set_bus_num(NOVENA_IT6251_I2C_BUS); + if (ret) { + puts("Cannot select LVDS-to-eDP I2C bus.\n"); + return; + } + + /* The IT6251 should be ready now, if it's not, it's not connected. */ + ret = it6251_ready(); + if (!ret) + return; + + /* Init the LVDS-to-eDP chip and if it succeeded, enable backlight. */ + ret = it6251_init(); + if (!ret) { + gpio_request(NOVENA_BACKLIGHT_PWR_GPIO, "backlight-power"); + gpio_request(NOVENA_BACKLIGHT_PWM_GPIO, "backlight-pwm"); + /* Backlight power enable. */ + gpio_direction_output(NOVENA_BACKLIGHT_PWR_GPIO, 1); + /* PWM backlight pin, always on for full brightness. */ + gpio_direction_output(NOVENA_BACKLIGHT_PWM_GPIO, 1); + } +} |