From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/drivers/clk/meson/gxbb.c | 925 +++++++++++++++++++++++++++++++++++
1 file changed, 925 insertions(+)
create mode 100644 roms/u-boot/drivers/clk/meson/gxbb.c
(limited to 'roms/u-boot/drivers/clk/meson/gxbb.c')
diff --git a/roms/u-boot/drivers/clk/meson/gxbb.c b/roms/u-boot/drivers/clk/meson/gxbb.c
new file mode 100644
index 000000000..e379540de
--- /dev/null
+++ b/roms/u-boot/drivers/clk/meson/gxbb.c
@@ -0,0 +1,925 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2018 - Beniamino Galvani <b.galvani@gmail.com>
+ * (C) Copyright 2018 - BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <common.h>
+#include <log.h>
+#include <asm/arch/clock-gx.h>
+#include <asm/io.h>
+#include <clk-uclass.h>
+#include <div64.h>
+#include <dm.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <dt-bindings/clock/gxbb-clkc.h>
+#include <linux/bitops.h>
+#include "clk_meson.h"
+#include <linux/err.h>
+
+/* This driver support only basic clock tree operations :
+ * - Can calculate clock frequency on a limited tree
+ * - Can Read muxes and basic dividers (0-based only)
+ * - Can enable/disable gates with limited propagation
+ * - Can reparent without propagation, only on muxes
+ * - Can set rates without reparenting
+ * This driver is adapted to what is actually supported by U-Boot
+ */
+
+/* Only the clocks ids we don't want to expose, such as the internal muxes
+ * and dividers of composite clocks, will remain defined here.
+ */
+#define CLKID_MPEG_SEL 10
+#define CLKID_MPEG_DIV 11
+#define CLKID_SAR_ADC_DIV 99
+#define CLKID_MALI_0_DIV 101
+#define CLKID_MALI_1_DIV 104
+#define CLKID_CTS_AMCLK_SEL 108
+#define CLKID_CTS_AMCLK_DIV 109
+#define CLKID_CTS_MCLK_I958_SEL 111
+#define CLKID_CTS_MCLK_I958_DIV 112
+#define CLKID_32K_CLK_SEL 115
+#define CLKID_32K_CLK_DIV 116
+#define CLKID_SD_EMMC_A_CLK0_SEL 117
+#define CLKID_SD_EMMC_A_CLK0_DIV 118
+#define CLKID_SD_EMMC_B_CLK0_SEL 120
+#define CLKID_SD_EMMC_B_CLK0_DIV 121
+#define CLKID_SD_EMMC_C_CLK0_SEL 123
+#define CLKID_SD_EMMC_C_CLK0_DIV 124
+#define CLKID_VPU_0_DIV 127
+#define CLKID_VPU_1_DIV 130
+#define CLKID_VAPB_0_DIV 134
+#define CLKID_VAPB_1_DIV 137
+#define CLKID_HDMI_PLL_PRE_MULT 141
+#define CLKID_MPLL0_DIV 142
+#define CLKID_MPLL1_DIV 143
+#define CLKID_MPLL2_DIV 144
+#define CLKID_MPLL_PREDIV 145
+#define CLKID_FCLK_DIV2_DIV 146
+#define CLKID_FCLK_DIV3_DIV 147
+#define CLKID_FCLK_DIV4_DIV 148
+#define CLKID_FCLK_DIV5_DIV 149
+#define CLKID_FCLK_DIV7_DIV 150
+#define CLKID_VDEC_1_SEL 151
+#define CLKID_VDEC_1_DIV 152
+#define CLKID_VDEC_HEVC_SEL 154
+#define CLKID_VDEC_HEVC_DIV 155
+
+#define XTAL_RATE 24000000
+
+struct meson_clk {
+ struct regmap *map;
+};
+
+static ulong meson_div_get_rate(struct clk *clk, unsigned long id);
+static ulong meson_div_set_rate(struct clk *clk, unsigned long id, ulong rate,
+ ulong current_rate);
+static ulong meson_mux_set_parent(struct clk *clk, unsigned long id,
+ unsigned long parent_id);
+static ulong meson_mux_get_rate(struct clk *clk, unsigned long id);
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned long id,
+ ulong rate, ulong current_rate);
+static ulong meson_mux_get_parent(struct clk *clk, unsigned long id);
+static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id);
+
+static struct meson_gate gates[] = {
+ /* Everything Else (EE) domain gates */
+ MESON_GATE(CLKID_DDR, HHI_GCLK_MPEG0, 0),
+ MESON_GATE(CLKID_DOS, HHI_GCLK_MPEG0, 1),
+ MESON_GATE(CLKID_ISA, HHI_GCLK_MPEG0, 5),
+ MESON_GATE(CLKID_PL301, HHI_GCLK_MPEG0, 6),
+ MESON_GATE(CLKID_PERIPHS, HHI_GCLK_MPEG0, 7),
+ MESON_GATE(CLKID_SPICC, HHI_GCLK_MPEG0, 8),
+ MESON_GATE(CLKID_I2C, HHI_GCLK_MPEG0, 9),
+ MESON_GATE(CLKID_SAR_ADC, HHI_GCLK_MPEG0, 10),
+ MESON_GATE(CLKID_SMART_CARD, HHI_GCLK_MPEG0, 11),
+ MESON_GATE(CLKID_RNG0, HHI_GCLK_MPEG0, 12),
+ MESON_GATE(CLKID_UART0, HHI_GCLK_MPEG0, 13),
+ MESON_GATE(CLKID_SDHC, HHI_GCLK_MPEG0, 14),
+ MESON_GATE(CLKID_STREAM, HHI_GCLK_MPEG0, 15),
+ MESON_GATE(CLKID_ASYNC_FIFO, HHI_GCLK_MPEG0, 16),
+ MESON_GATE(CLKID_SDIO, HHI_GCLK_MPEG0, 17),
+ MESON_GATE(CLKID_ABUF, HHI_GCLK_MPEG0, 18),
+ MESON_GATE(CLKID_HIU_IFACE, HHI_GCLK_MPEG0, 19),
+ MESON_GATE(CLKID_ASSIST_MISC, HHI_GCLK_MPEG0, 23),
+ MESON_GATE(CLKID_SD_EMMC_A, HHI_GCLK_MPEG0, 24),
+ MESON_GATE(CLKID_SD_EMMC_B, HHI_GCLK_MPEG0, 25),
+ MESON_GATE(CLKID_SD_EMMC_C, HHI_GCLK_MPEG0, 26),
+ MESON_GATE(CLKID_SPI, HHI_GCLK_MPEG0, 30),
+
+ MESON_GATE(CLKID_I2S_SPDIF, HHI_GCLK_MPEG1, 2),
+ MESON_GATE(CLKID_ETH, HHI_GCLK_MPEG1, 3),
+ MESON_GATE(CLKID_DEMUX, HHI_GCLK_MPEG1, 4),
+ MESON_GATE(CLKID_AIU_GLUE, HHI_GCLK_MPEG1, 6),
+ MESON_GATE(CLKID_IEC958, HHI_GCLK_MPEG1, 7),
+ MESON_GATE(CLKID_I2S_OUT, HHI_GCLK_MPEG1, 8),
+ MESON_GATE(CLKID_AMCLK, HHI_GCLK_MPEG1, 9),
+ MESON_GATE(CLKID_AIFIFO2, HHI_GCLK_MPEG1, 10),
+ MESON_GATE(CLKID_MIXER, HHI_GCLK_MPEG1, 11),
+ MESON_GATE(CLKID_MIXER_IFACE, HHI_GCLK_MPEG1, 12),
+ MESON_GATE(CLKID_ADC, HHI_GCLK_MPEG1, 13),
+ MESON_GATE(CLKID_BLKMV, HHI_GCLK_MPEG1, 14),
+ MESON_GATE(CLKID_AIU, HHI_GCLK_MPEG1, 15),
+ MESON_GATE(CLKID_UART1, HHI_GCLK_MPEG1, 16),
+ MESON_GATE(CLKID_G2D, HHI_GCLK_MPEG1, 20),
+ MESON_GATE(CLKID_USB0, HHI_GCLK_MPEG1, 21),
+ MESON_GATE(CLKID_USB1, HHI_GCLK_MPEG1, 22),
+ MESON_GATE(CLKID_RESET, HHI_GCLK_MPEG1, 23),
+ MESON_GATE(CLKID_NAND, HHI_GCLK_MPEG1, 24),
+ MESON_GATE(CLKID_DOS_PARSER, HHI_GCLK_MPEG1, 25),
+ MESON_GATE(CLKID_USB, HHI_GCLK_MPEG1, 26),
+ MESON_GATE(CLKID_VDIN1, HHI_GCLK_MPEG1, 28),
+ MESON_GATE(CLKID_AHB_ARB0, HHI_GCLK_MPEG1, 29),
+ MESON_GATE(CLKID_EFUSE, HHI_GCLK_MPEG1, 30),
+ MESON_GATE(CLKID_BOOT_ROM, HHI_GCLK_MPEG1, 31),
+
+ MESON_GATE(CLKID_AHB_DATA_BUS, HHI_GCLK_MPEG2, 1),
+ MESON_GATE(CLKID_AHB_CTRL_BUS, HHI_GCLK_MPEG2, 2),
+ MESON_GATE(CLKID_HDMI_INTR_SYNC, HHI_GCLK_MPEG2, 3),
+ MESON_GATE(CLKID_HDMI_PCLK, HHI_GCLK_MPEG2, 4),
+ MESON_GATE(CLKID_USB1_DDR_BRIDGE, HHI_GCLK_MPEG2, 8),
+ MESON_GATE(CLKID_USB0_DDR_BRIDGE, HHI_GCLK_MPEG2, 9),
+ MESON_GATE(CLKID_MMC_PCLK, HHI_GCLK_MPEG2, 11),
+ MESON_GATE(CLKID_DVIN, HHI_GCLK_MPEG2, 12),
+ MESON_GATE(CLKID_UART2, HHI_GCLK_MPEG2, 15),
+ MESON_GATE(CLKID_SANA, HHI_GCLK_MPEG2, 22),
+ MESON_GATE(CLKID_VPU_INTR, HHI_GCLK_MPEG2, 25),
+ MESON_GATE(CLKID_SEC_AHB_AHB3_BRIDGE, HHI_GCLK_MPEG2, 26),
+ MESON_GATE(CLKID_CLK81_A53, HHI_GCLK_MPEG2, 29),
+
+ MESON_GATE(CLKID_VCLK2_VENCI0, HHI_GCLK_OTHER, 1),
+ MESON_GATE(CLKID_VCLK2_VENCI1, HHI_GCLK_OTHER, 2),
+ MESON_GATE(CLKID_VCLK2_VENCP0, HHI_GCLK_OTHER, 3),
+ MESON_GATE(CLKID_VCLK2_VENCP1, HHI_GCLK_OTHER, 4),
+ MESON_GATE(CLKID_GCLK_VENCI_INT0, HHI_GCLK_OTHER, 8),
+ MESON_GATE(CLKID_DAC_CLK, HHI_GCLK_OTHER, 10),
+ MESON_GATE(CLKID_AOCLK_GATE, HHI_GCLK_OTHER, 14),
+ MESON_GATE(CLKID_IEC958_GATE, HHI_GCLK_OTHER, 16),
+ MESON_GATE(CLKID_ENC480P, HHI_GCLK_OTHER, 20),
+ MESON_GATE(CLKID_RNG1, HHI_GCLK_OTHER, 21),
+ MESON_GATE(CLKID_GCLK_VENCI_INT1, HHI_GCLK_OTHER, 22),
+ MESON_GATE(CLKID_VCLK2_VENCLMCC, HHI_GCLK_OTHER, 24),
+ MESON_GATE(CLKID_VCLK2_VENCL, HHI_GCLK_OTHER, 25),
+ MESON_GATE(CLKID_VCLK_OTHER, HHI_GCLK_OTHER, 26),
+ MESON_GATE(CLKID_EDP, HHI_GCLK_OTHER, 31),
+
+ /* Always On (AO) domain gates */
+ MESON_GATE(CLKID_AO_MEDIA_CPU, HHI_GCLK_AO, 0),
+ MESON_GATE(CLKID_AO_AHB_SRAM, HHI_GCLK_AO, 1),
+ MESON_GATE(CLKID_AO_AHB_BUS, HHI_GCLK_AO, 2),
+ MESON_GATE(CLKID_AO_IFACE, HHI_GCLK_AO, 3),
+ MESON_GATE(CLKID_AO_I2C, HHI_GCLK_AO, 4),
+
+ /* PLL Gates */
+ /* CLKID_FCLK_DIV2 is critical for the SCPI Processor */
+ MESON_GATE(CLKID_FCLK_DIV3, HHI_MPLL_CNTL6, 28),
+ MESON_GATE(CLKID_FCLK_DIV4, HHI_MPLL_CNTL6, 29),
+ MESON_GATE(CLKID_FCLK_DIV5, HHI_MPLL_CNTL6, 30),
+ MESON_GATE(CLKID_FCLK_DIV7, HHI_MPLL_CNTL6, 31),
+ MESON_GATE(CLKID_MPLL0, HHI_MPLL_CNTL7, 14),
+ MESON_GATE(CLKID_MPLL1, HHI_MPLL_CNTL8, 14),
+ MESON_GATE(CLKID_MPLL2, HHI_MPLL_CNTL9, 14),
+ /* CLKID_CLK81 is critical for the system */
+
+ /* Peripheral Gates */
+ MESON_GATE(CLKID_SAR_ADC_CLK, HHI_SAR_CLK_CNTL, 8),
+ MESON_GATE(CLKID_SD_EMMC_A_CLK0, HHI_SD_EMMC_CLK_CNTL, 7),
+ MESON_GATE(CLKID_SD_EMMC_B_CLK0, HHI_SD_EMMC_CLK_CNTL, 23),
+ MESON_GATE(CLKID_SD_EMMC_C_CLK0, HHI_NAND_CLK_CNTL, 7),
+ MESON_GATE(CLKID_VPU_0, HHI_VPU_CLK_CNTL, 8),
+ MESON_GATE(CLKID_VPU_1, HHI_VPU_CLK_CNTL, 24),
+ MESON_GATE(CLKID_VAPB_0, HHI_VAPBCLK_CNTL, 8),
+ MESON_GATE(CLKID_VAPB_1, HHI_VAPBCLK_CNTL, 24),
+ MESON_GATE(CLKID_VAPB, HHI_VAPBCLK_CNTL, 30),
+};
+
+static int meson_set_gate_by_id(struct clk *clk, unsigned long id, bool on)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct meson_gate *gate;
+
+ debug("%s: %sabling %ld\n", __func__, on ? "en" : "dis", id);
+
+ /* Propagate through muxes */
+ switch (id) {
+ case CLKID_VPU:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU), on);
+ case CLKID_VAPB_SEL:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_SEL), on);
+ }
+
+ if (id >= ARRAY_SIZE(gates))
+ return -ENOENT;
+
+ gate = &gates[id];
+
+ if (gate->reg == 0)
+ return 0;
+
+ debug("%s: really %sabling %ld\n", __func__, on ? "en" : "dis", id);
+
+ regmap_update_bits(priv->map, gate->reg,
+ BIT(gate->bit), on ? BIT(gate->bit) : 0);
+
+ /* Propagate to next gate(s) */
+ switch (id) {
+ case CLKID_VAPB:
+ return meson_set_gate_by_id(clk, CLKID_VAPB_SEL, on);
+ }
+
+ return 0;
+}
+
+static int meson_clk_enable(struct clk *clk)
+{
+ return meson_set_gate_by_id(clk, clk->id, true);
+}
+
+static int meson_clk_disable(struct clk *clk)
+{
+ return meson_set_gate_by_id(clk, clk->id, false);
+}
+
+static struct parm meson_vpu_0_div_parm = {
+ HHI_VPU_CLK_CNTL, 0, 7,
+};
+
+int meson_vpu_0_div_parent = CLKID_VPU_0_SEL;
+
+static struct parm meson_vpu_1_div_parm = {
+ HHI_VPU_CLK_CNTL, 16, 7,
+};
+
+int meson_vpu_1_div_parent = CLKID_VPU_1_SEL;
+
+static struct parm meson_vapb_0_div_parm = {
+ HHI_VAPBCLK_CNTL, 0, 7,
+};
+
+int meson_vapb_0_div_parent = CLKID_VAPB_0_SEL;
+
+static struct parm meson_vapb_1_div_parm = {
+ HHI_VAPBCLK_CNTL, 16, 7,
+};
+
+int meson_vapb_1_div_parent = CLKID_VAPB_1_SEL;
+
+static ulong meson_div_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int rate, parent_rate;
+ struct parm *parm;
+ int parent;
+ uint reg;
+
+ switch (id) {
+ case CLKID_VPU_0_DIV:
+ parm = &meson_vpu_0_div_parm;
+ parent = meson_vpu_0_div_parent;
+ break;
+ case CLKID_VPU_1_DIV:
+ parm = &meson_vpu_1_div_parm;
+ parent = meson_vpu_1_div_parent;
+ break;
+ case CLKID_VAPB_0_DIV:
+ parm = &meson_vapb_0_div_parm;
+ parent = meson_vapb_0_div_parent;
+ break;
+ case CLKID_VAPB_1_DIV:
+ parm = &meson_vapb_1_div_parm;
+ parent = meson_vapb_1_div_parent;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ regmap_read(priv->map, parm->reg_off, ®);
+ reg = PARM_GET(parm->width, parm->shift, reg);
+
+ debug("%s: div of %ld is %d\n", __func__, id, reg + 1);
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ debug("%s: parent rate of %ld is %d\n", __func__, id, parent_rate);
+
+ rate = parent_rate / (reg + 1);
+
+ debug("%s: rate of %ld is %d\n", __func__, id, rate);
+
+ return rate;
+}
+
+static ulong meson_div_set_rate(struct clk *clk, unsigned long id, ulong rate,
+ ulong current_rate)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int new_div = -EINVAL;
+ unsigned long parent_rate;
+ struct parm *parm;
+ int parent;
+ int ret;
+
+ if (current_rate == rate)
+ return 0;
+
+ debug("%s: setting rate of %ld from %ld to %ld\n",
+ __func__, id, current_rate, rate);
+
+ switch (id) {
+ case CLKID_VPU_0_DIV:
+ parm = &meson_vpu_0_div_parm;
+ parent = meson_vpu_0_div_parent;
+ break;
+ case CLKID_VPU_1_DIV:
+ parm = &meson_vpu_1_div_parm;
+ parent = meson_vpu_1_div_parent;
+ break;
+ case CLKID_VAPB_0_DIV:
+ parm = &meson_vapb_0_div_parm;
+ parent = meson_vapb_0_div_parent;
+ break;
+ case CLKID_VAPB_1_DIV:
+ parm = &meson_vapb_1_div_parm;
+ parent = meson_vapb_1_div_parent;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ debug("%s: parent rate of %ld is %ld\n", __func__, id, parent_rate);
+
+ /* If can't divide, set parent instead */
+ if (!parent_rate || rate > parent_rate)
+ return meson_clk_set_rate_by_id(clk, parent, rate,
+ current_rate);
+
+ new_div = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ debug("%s: new div of %ld is %d\n", __func__, id, new_div);
+
+ /* If overflow, try to set parent rate and retry */
+ if (!new_div || new_div > (1 << parm->width)) {
+ ret = meson_clk_set_rate_by_id(clk, parent, rate, current_rate);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ new_div = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ debug("%s: new new div of %ld is %d\n", __func__, id, new_div);
+
+ if (!new_div || new_div > (1 << parm->width))
+ return -EINVAL;
+ }
+
+ debug("%s: setting div of %ld to %d\n", __func__, id, new_div);
+
+ regmap_update_bits(priv->map, parm->reg_off, SETPMASK(parm->width, parm->shift),
+ (new_div - 1) << parm->shift);
+
+ debug("%s: new rate of %ld is %ld\n",
+ __func__, id, meson_div_get_rate(clk, id));
+
+ return 0;
+}
+
+static struct parm meson_vpu_mux_parm = {
+ HHI_VPU_CLK_CNTL, 31, 1,
+};
+
+int meson_vpu_mux_parents[] = {
+ CLKID_VPU_0,
+ CLKID_VPU_1,
+};
+
+static struct parm meson_vpu_0_mux_parm = {
+ HHI_VPU_CLK_CNTL, 9, 2,
+};
+
+static struct parm meson_vpu_1_mux_parm = {
+ HHI_VPU_CLK_CNTL, 25, 2,
+};
+
+static int meson_vpu_0_1_mux_parents[] = {
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV5,
+ CLKID_FCLK_DIV7,
+};
+
+static struct parm meson_vapb_sel_mux_parm = {
+ HHI_VAPBCLK_CNTL, 31, 1,
+};
+
+int meson_vapb_sel_mux_parents[] = {
+ CLKID_VAPB_0,
+ CLKID_VAPB_1,
+};
+
+static struct parm meson_vapb_0_mux_parm = {
+ HHI_VAPBCLK_CNTL, 9, 2,
+};
+
+static struct parm meson_vapb_1_mux_parm = {
+ HHI_VAPBCLK_CNTL, 25, 2,
+};
+
+static int meson_vapb_0_1_mux_parents[] = {
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV5,
+ CLKID_FCLK_DIV7,
+};
+
+static ulong meson_mux_get_parent(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct parm *parm;
+ int *parents;
+ uint reg;
+
+ switch (id) {
+ case CLKID_VPU:
+ parm = &meson_vpu_mux_parm;
+ parents = meson_vpu_mux_parents;
+ break;
+ case CLKID_VPU_0_SEL:
+ parm = &meson_vpu_0_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VPU_1_SEL:
+ parm = &meson_vpu_1_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_SEL:
+ parm = &meson_vapb_sel_mux_parm;
+ parents = meson_vapb_sel_mux_parents;
+ break;
+ case CLKID_VAPB_0_SEL:
+ parm = &meson_vapb_0_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_1_SEL:
+ parm = &meson_vapb_1_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ regmap_read(priv->map, parm->reg_off, ®);
+ reg = PARM_GET(parm->width, parm->shift, reg);
+
+ debug("%s: parent of %ld is %d (%d)\n",
+ __func__, id, parents[reg], reg);
+
+ return parents[reg];
+}
+
+static ulong meson_mux_set_parent(struct clk *clk, unsigned long id,
+ unsigned long parent_id)
+{
+ unsigned long cur_parent = meson_mux_get_parent(clk, id);
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int new_index = -EINVAL;
+ struct parm *parm;
+ int *parents;
+ int i;
+
+ if (IS_ERR_VALUE(cur_parent))
+ return cur_parent;
+
+ debug("%s: setting parent of %ld from %ld to %ld\n",
+ __func__, id, cur_parent, parent_id);
+
+ if (cur_parent == parent_id)
+ return 0;
+
+ switch (id) {
+ case CLKID_VPU:
+ parm = &meson_vpu_mux_parm;
+ parents = meson_vpu_mux_parents;
+ break;
+ case CLKID_VPU_0_SEL:
+ parm = &meson_vpu_0_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VPU_1_SEL:
+ parm = &meson_vpu_1_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_SEL:
+ parm = &meson_vapb_sel_mux_parm;
+ parents = meson_vapb_sel_mux_parents;
+ break;
+ case CLKID_VAPB_0_SEL:
+ parm = &meson_vapb_0_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_1_SEL:
+ parm = &meson_vapb_1_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ default:
+ /* Not a mux */
+ return -ENOENT;
+ }
+
+ for (i = 0 ; i < (1 << parm->width) ; ++i) {
+ if (parents[i] == parent_id)
+ new_index = i;
+ }
+
+ if (IS_ERR_VALUE(new_index))
+ return new_index;
+
+ debug("%s: new index of %ld is %d\n", __func__, id, new_index);
+
+ regmap_update_bits(priv->map, parm->reg_off, SETPMASK(parm->width, parm->shift),
+ new_index << parm->shift);
+
+ debug("%s: new parent of %ld is %ld\n",
+ __func__, id, meson_mux_get_parent(clk, id));
+
+ return 0;
+}
+
+static ulong meson_mux_get_rate(struct clk *clk, unsigned long id)
+{
+ int parent = meson_mux_get_parent(clk, id);
+
+ if (IS_ERR_VALUE(parent))
+ return parent;
+
+ return meson_clk_get_rate_by_id(clk, parent);
+}
+
+static unsigned long meson_clk81_get_rate(struct clk *clk)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned long parent_rate;
+ uint reg;
+ int parents[] = {
+ -1,
+ -1,
+ CLKID_FCLK_DIV7,
+ CLKID_MPLL1,
+ CLKID_MPLL2,
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV5
+ };
+
+ /* mux */
+ regmap_read(priv->map, HHI_MPEG_CLK_CNTL, ®);
+ reg = (reg >> 12) & 7;
+
+ switch (reg) {
+ case 0:
+ parent_rate = XTAL_RATE;
+ break;
+ case 1:
+ return -ENOENT;
+ default:
+ parent_rate = meson_clk_get_rate_by_id(clk, parents[reg]);
+ }
+
+ /* divider */
+ regmap_read(priv->map, HHI_MPEG_CLK_CNTL, ®);
+ reg = reg & ((1 << 7) - 1);
+
+ /* clk81 divider is zero based */
+ return parent_rate / (reg + 1);
+}
+
+static long mpll_rate_from_params(unsigned long parent_rate,
+ unsigned long sdm,
+ unsigned long n2)
+{
+ unsigned long divisor = (SDM_DEN * n2) + sdm;
+
+ if (n2 < N2_MIN)
+ return -EINVAL;
+
+ return DIV_ROUND_UP_ULL((u64)parent_rate * SDM_DEN, divisor);
+}
+
+static struct parm meson_mpll0_parm[3] = {
+ {HHI_MPLL_CNTL7, 0, 14}, /* psdm */
+ {HHI_MPLL_CNTL7, 16, 9}, /* pn2 */
+};
+
+static struct parm meson_mpll1_parm[3] = {
+ {HHI_MPLL_CNTL8, 0, 14}, /* psdm */
+ {HHI_MPLL_CNTL8, 16, 9}, /* pn2 */
+};
+
+static struct parm meson_mpll2_parm[3] = {
+ {HHI_MPLL_CNTL9, 0, 14}, /* psdm */
+ {HHI_MPLL_CNTL9, 16, 9}, /* pn2 */
+};
+
+/*
+ * MultiPhase Locked Loops are outputs from a PLL with additional frequency
+ * scaling capabilities. MPLL rates are calculated as:
+ *
+ * f(N2_integer, SDM_IN ) = 2.0G/(N2_integer + SDM_IN/16384)
+ */
+static ulong meson_mpll_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct parm *psdm, *pn2;
+ unsigned long sdm, n2;
+ unsigned long parent_rate;
+ uint reg;
+
+ switch (id) {
+ case CLKID_MPLL0:
+ psdm = &meson_mpll0_parm[0];
+ pn2 = &meson_mpll0_parm[1];
+ break;
+ case CLKID_MPLL1:
+ psdm = &meson_mpll1_parm[0];
+ pn2 = &meson_mpll1_parm[1];
+ break;
+ case CLKID_MPLL2:
+ psdm = &meson_mpll2_parm[0];
+ pn2 = &meson_mpll2_parm[1];
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ parent_rate = meson_clk_get_rate_by_id(clk, CLKID_FIXED_PLL);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ regmap_read(priv->map, psdm->reg_off, ®);
+ sdm = PARM_GET(psdm->width, psdm->shift, reg);
+
+ regmap_read(priv->map, pn2->reg_off, ®);
+ n2 = PARM_GET(pn2->width, pn2->shift, reg);
+
+ return mpll_rate_from_params(parent_rate, sdm, n2);
+}
+
+static struct parm meson_fixed_pll_parm[3] = {
+ {HHI_MPLL_CNTL, 0, 9}, /* pm */
+ {HHI_MPLL_CNTL, 9, 5}, /* pn */
+ {HHI_MPLL_CNTL, 16, 2}, /* pod */
+};
+
+static struct parm meson_sys_pll_parm[3] = {
+ {HHI_SYS_PLL_CNTL, 0, 9}, /* pm */
+ {HHI_SYS_PLL_CNTL, 9, 5}, /* pn */
+ {HHI_SYS_PLL_CNTL, 10, 2}, /* pod */
+};
+
+static ulong meson_pll_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct parm *pm, *pn, *pod;
+ unsigned long parent_rate_mhz = XTAL_RATE / 1000000;
+ u16 n, m, od;
+ uint reg;
+
+ switch (id) {
+ case CLKID_FIXED_PLL:
+ pm = &meson_fixed_pll_parm[0];
+ pn = &meson_fixed_pll_parm[1];
+ pod = &meson_fixed_pll_parm[2];
+ break;
+ case CLKID_SYS_PLL:
+ pm = &meson_sys_pll_parm[0];
+ pn = &meson_sys_pll_parm[1];
+ pod = &meson_sys_pll_parm[2];
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ regmap_read(priv->map, pn->reg_off, ®);
+ n = PARM_GET(pn->width, pn->shift, reg);
+
+ regmap_read(priv->map, pm->reg_off, ®);
+ m = PARM_GET(pm->width, pm->shift, reg);
+
+ regmap_read(priv->map, pod->reg_off, ®);
+ od = PARM_GET(pod->width, pod->shift, reg);
+
+ return ((parent_rate_mhz * m / n) >> od) * 1000000;
+}
+
+static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id)
+{
+ ulong rate;
+
+ switch (id) {
+ case CLKID_FIXED_PLL:
+ case CLKID_SYS_PLL:
+ rate = meson_pll_get_rate(clk, id);
+ break;
+ case CLKID_FCLK_DIV2:
+ rate = meson_pll_get_rate(clk, CLKID_FIXED_PLL) / 2;
+ break;
+ case CLKID_FCLK_DIV3:
+ rate = meson_pll_get_rate(clk, CLKID_FIXED_PLL) / 3;
+ break;
+ case CLKID_FCLK_DIV4:
+ rate = meson_pll_get_rate(clk, CLKID_FIXED_PLL) / 4;
+ break;
+ case CLKID_FCLK_DIV5:
+ rate = meson_pll_get_rate(clk, CLKID_FIXED_PLL) / 5;
+ break;
+ case CLKID_FCLK_DIV7:
+ rate = meson_pll_get_rate(clk, CLKID_FIXED_PLL) / 7;
+ break;
+ case CLKID_MPLL0:
+ case CLKID_MPLL1:
+ case CLKID_MPLL2:
+ rate = meson_mpll_get_rate(clk, id);
+ break;
+ case CLKID_CLK81:
+ rate = meson_clk81_get_rate(clk);
+ break;
+ case CLKID_VPU_0:
+ rate = meson_div_get_rate(clk, CLKID_VPU_0_DIV);
+ break;
+ case CLKID_VPU_1:
+ rate = meson_div_get_rate(clk, CLKID_VPU_1_DIV);
+ break;
+ case CLKID_VAPB:
+ rate = meson_mux_get_rate(clk, CLKID_VAPB_SEL);
+ break;
+ case CLKID_VAPB_0:
+ rate = meson_div_get_rate(clk, CLKID_VAPB_0_DIV);
+ break;
+ case CLKID_VAPB_1:
+ rate = meson_div_get_rate(clk, CLKID_VAPB_1_DIV);
+ break;
+ case CLKID_VPU_0_DIV:
+ case CLKID_VPU_1_DIV:
+ case CLKID_VAPB_0_DIV:
+ case CLKID_VAPB_1_DIV:
+ rate = meson_div_get_rate(clk, id);
+ break;
+ case CLKID_VPU:
+ case CLKID_VPU_0_SEL:
+ case CLKID_VPU_1_SEL:
+ case CLKID_VAPB_SEL:
+ case CLKID_VAPB_0_SEL:
+ case CLKID_VAPB_1_SEL:
+ rate = meson_mux_get_rate(clk, id);
+ break;
+ default:
+ if (gates[id].reg != 0) {
+ /* a clock gate */
+ rate = meson_clk81_get_rate(clk);
+ break;
+ }
+ return -ENOENT;
+ }
+
+ debug("clock %lu has rate %lu\n", id, rate);
+ return rate;
+}
+
+static ulong meson_clk_get_rate(struct clk *clk)
+{
+ return meson_clk_get_rate_by_id(clk, clk->id);
+}
+
+static int meson_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ return meson_mux_set_parent(clk, clk->id, parent->id);
+}
+
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned long id,
+ ulong rate, ulong current_rate)
+{
+ if (current_rate == rate)
+ return 0;
+
+ switch (id) {
+ /* Fixed clocks */
+ case CLKID_FIXED_PLL:
+ case CLKID_SYS_PLL:
+ case CLKID_FCLK_DIV2:
+ case CLKID_FCLK_DIV3:
+ case CLKID_FCLK_DIV4:
+ case CLKID_FCLK_DIV5:
+ case CLKID_FCLK_DIV7:
+ case CLKID_MPLL0:
+ case CLKID_MPLL1:
+ case CLKID_MPLL2:
+ case CLKID_CLK81:
+ return -EINVAL;
+ case CLKID_VPU:
+ return meson_clk_set_rate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU), rate,
+ current_rate);
+ case CLKID_VAPB:
+ case CLKID_VAPB_SEL:
+ return meson_clk_set_rate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_SEL),
+ rate, current_rate);
+ case CLKID_VPU_0:
+ return meson_div_set_rate(clk, CLKID_VPU_0_DIV, rate,
+ current_rate);
+ case CLKID_VPU_1:
+ return meson_div_set_rate(clk, CLKID_VPU_1_DIV, rate,
+ current_rate);
+ case CLKID_VAPB_0:
+ return meson_div_set_rate(clk, CLKID_VAPB_0_DIV, rate,
+ current_rate);
+ case CLKID_VAPB_1:
+ return meson_div_set_rate(clk, CLKID_VAPB_1_DIV, rate,
+ current_rate);
+ case CLKID_VPU_0_DIV:
+ case CLKID_VPU_1_DIV:
+ case CLKID_VAPB_0_DIV:
+ case CLKID_VAPB_1_DIV:
+ return meson_div_set_rate(clk, id, rate, current_rate);
+ default:
+ return -ENOENT;
+ }
+
+ return -EINVAL;
+}
+
+static ulong meson_clk_set_rate(struct clk *clk, ulong rate)
+{
+ ulong current_rate = meson_clk_get_rate_by_id(clk, clk->id);
+ int ret;
+
+ if (IS_ERR_VALUE(current_rate))
+ return current_rate;
+
+ debug("%s: setting rate of %ld from %ld to %ld\n",
+ __func__, clk->id, current_rate, rate);
+
+ ret = meson_clk_set_rate_by_id(clk, clk->id, rate, current_rate);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ debug("clock %lu has new rate %lu\n", clk->id,
+ meson_clk_get_rate_by_id(clk, clk->id));
+
+ return 0;
+}
+
+static int meson_clk_probe(struct udevice *dev)
+{
+ struct meson_clk *priv = dev_get_priv(dev);
+
+ priv->map = syscon_node_to_regmap(dev_ofnode(dev_get_parent(dev)));
+ if (IS_ERR(priv->map))
+ return PTR_ERR(priv->map);
+
+ /*
+ * Depending on the boot src, the state of the MMC clock might
+ * be different. Reset it to make sure we won't get stuck
+ */
+ regmap_write(priv->map, HHI_NAND_CLK_CNTL, 0);
+ regmap_write(priv->map, HHI_SD_EMMC_CLK_CNTL, 0);
+
+ debug("meson-clk: probed\n");
+
+ return 0;
+}
+
+static struct clk_ops meson_clk_ops = {
+ .disable = meson_clk_disable,
+ .enable = meson_clk_enable,
+ .get_rate = meson_clk_get_rate,
+ .set_parent = meson_clk_set_parent,
+ .set_rate = meson_clk_set_rate,
+};
+
+static const struct udevice_id meson_clk_ids[] = {
+ { .compatible = "amlogic,gxbb-clkc" },
+ { .compatible = "amlogic,gxl-clkc" },
+ { }
+};
+
+U_BOOT_DRIVER(meson_clk) = {
+ .name = "meson_clk",
+ .id = UCLASS_CLK,
+ .of_match = meson_clk_ids,
+ .priv_auto = sizeof(struct meson_clk),
+ .ops = &meson_clk_ops,
+ .probe = meson_clk_probe,
+};
--
cgit