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path: root/roms/u-boot/drivers/mmc/zynq_sdhci.c
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Diffstat (limited to 'roms/u-boot/drivers/mmc/zynq_sdhci.c')
-rw-r--r--roms/u-boot/drivers/mmc/zynq_sdhci.c664
1 files changed, 664 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/mmc/zynq_sdhci.c b/roms/u-boot/drivers/mmc/zynq_sdhci.c
new file mode 100644
index 000000000..b79c4021b
--- /dev/null
+++ b/roms/u-boot/drivers/mmc/zynq_sdhci.c
@@ -0,0 +1,664 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2013 - 2015 Xilinx, Inc.
+ *
+ * Xilinx Zynq SD Host Controller Interface
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <linux/delay.h>
+#include "mmc_private.h"
+#include <log.h>
+#include <dm/device_compat.h>
+#include <linux/err.h>
+#include <linux/libfdt.h>
+#include <malloc.h>
+#include <sdhci.h>
+#include <zynqmp_tap_delay.h>
+
+#define SDHCI_ARASAN_ITAPDLY_REGISTER 0xF0F8
+#define SDHCI_ARASAN_OTAPDLY_REGISTER 0xF0FC
+#define SDHCI_ITAPDLY_CHGWIN 0x200
+#define SDHCI_ITAPDLY_ENABLE 0x100
+#define SDHCI_OTAPDLY_ENABLE 0x40
+
+#define SDHCI_TUNING_LOOP_COUNT 40
+#define MMC_BANK2 0x2
+
+struct arasan_sdhci_clk_data {
+ int clk_phase_in[MMC_TIMING_MMC_HS400 + 1];
+ int clk_phase_out[MMC_TIMING_MMC_HS400 + 1];
+};
+
+struct arasan_sdhci_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
+struct arasan_sdhci_priv {
+ struct sdhci_host *host;
+ struct arasan_sdhci_clk_data clk_data;
+ u8 deviceid;
+ u8 bank;
+ u8 no_1p8;
+};
+
+#if defined(CONFIG_ARCH_ZYNQMP) || defined(CONFIG_ARCH_VERSAL)
+/* Default settings for ZynqMP Clock Phases */
+const u32 zynqmp_iclk_phases[] = {0, 63, 63, 0, 63, 0, 0, 183, 54, 0, 0};
+const u32 zynqmp_oclk_phases[] = {0, 72, 60, 0, 60, 72, 135, 48, 72, 135, 0};
+
+/* Default settings for Versal Clock Phases */
+const u32 versal_iclk_phases[] = {0, 132, 132, 0, 132, 0, 0, 162, 90, 0, 0};
+const u32 versal_oclk_phases[] = {0, 60, 48, 0, 48, 72, 90, 36, 60, 90, 0};
+
+static const u8 mode2timing[] = {
+ [MMC_LEGACY] = MMC_TIMING_LEGACY,
+ [MMC_HS] = MMC_TIMING_MMC_HS,
+ [SD_HS] = MMC_TIMING_SD_HS,
+ [MMC_HS_52] = MMC_TIMING_UHS_SDR50,
+ [MMC_DDR_52] = MMC_TIMING_UHS_DDR50,
+ [UHS_SDR12] = MMC_TIMING_UHS_SDR12,
+ [UHS_SDR25] = MMC_TIMING_UHS_SDR25,
+ [UHS_SDR50] = MMC_TIMING_UHS_SDR50,
+ [UHS_DDR50] = MMC_TIMING_UHS_DDR50,
+ [UHS_SDR104] = MMC_TIMING_UHS_SDR104,
+ [MMC_HS_200] = MMC_TIMING_MMC_HS200,
+};
+
+static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u8 deviceid)
+{
+ u16 clk;
+ unsigned long timeout;
+
+ clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ clk &= ~(SDHCI_CLOCK_CARD_EN);
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+ /* Issue DLL Reset */
+ zynqmp_dll_reset(deviceid);
+
+ /* Wait max 20 ms */
+ timeout = 100;
+ while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
+ & SDHCI_CLOCK_INT_STABLE)) {
+ if (timeout == 0) {
+ dev_err(mmc_dev(host->mmc),
+ ": Internal clock never stabilised.\n");
+ return;
+ }
+ timeout--;
+ udelay(1000);
+ }
+
+ clk |= SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+}
+
+static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
+{
+ struct mmc_cmd cmd;
+ struct mmc_data data;
+ u32 ctrl;
+ struct sdhci_host *host;
+ struct arasan_sdhci_priv *priv = dev_get_priv(mmc->dev);
+ char tuning_loop_counter = SDHCI_TUNING_LOOP_COUNT;
+ u8 deviceid;
+
+ debug("%s\n", __func__);
+
+ host = priv->host;
+ deviceid = priv->deviceid;
+
+ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ ctrl |= SDHCI_CTRL_EXEC_TUNING;
+ sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+
+ mdelay(1);
+
+ arasan_zynqmp_dll_reset(host, deviceid);
+
+ sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_INT_ENABLE);
+ sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_SIGNAL_ENABLE);
+
+ do {
+ cmd.cmdidx = opcode;
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.cmdarg = 0;
+
+ data.blocksize = 64;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+
+ if (tuning_loop_counter-- == 0)
+ break;
+
+ if (cmd.cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200 &&
+ mmc->bus_width == 8)
+ data.blocksize = 128;
+
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
+ data.blocksize),
+ SDHCI_BLOCK_SIZE);
+ sdhci_writew(host, data.blocks, SDHCI_BLOCK_COUNT);
+ sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE);
+
+ mmc_send_cmd(mmc, &cmd, NULL);
+ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+
+ if (cmd.cmdidx == MMC_CMD_SEND_TUNING_BLOCK)
+ udelay(1);
+
+ } while (ctrl & SDHCI_CTRL_EXEC_TUNING);
+
+ if (tuning_loop_counter < 0) {
+ ctrl &= ~SDHCI_CTRL_TUNED_CLK;
+ sdhci_writel(host, ctrl, SDHCI_HOST_CONTROL2);
+ }
+
+ if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
+ printf("%s:Tuning failed\n", __func__);
+ return -1;
+ }
+
+ udelay(1);
+ arasan_zynqmp_dll_reset(host, deviceid);
+
+ /* Enable only interrupts served by the SD controller */
+ sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK,
+ SDHCI_INT_ENABLE);
+ /* Mask all sdhci interrupt sources */
+ sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE);
+
+ return 0;
+}
+
+/**
+ * sdhci_zynqmp_sdcardclk_set_phase - Set the SD Output Clock Tap Delays
+ *
+ * Set the SD Output Clock Tap Delays for Output path
+ *
+ * @host: Pointer to the sdhci_host structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ * Return: 0 on success and error value on error
+ */
+static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
+ int degrees)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u8 tap_delay, tap_max = 0;
+ int ret;
+ int timing = mode2timing[mmc->selected_mode];
+
+ /*
+ * This is applicable for SDHCI_SPEC_300 and above
+ * ZynqMP does not set phase for <=25MHz clock.
+ * If degrees is zero, no need to do anything.
+ */
+ if (SDHCI_GET_VERSION(host) < SDHCI_SPEC_300 ||
+ timing == MMC_TIMING_LEGACY ||
+ timing == MMC_TIMING_UHS_SDR12 || !degrees)
+ return 0;
+
+ switch (timing) {
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_UHS_SDR25:
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
+ /* For 50MHz clock, 30 Taps are available */
+ tap_max = 30;
+ break;
+ case MMC_TIMING_UHS_SDR50:
+ /* For 100MHz clock, 15 Taps are available */
+ tap_max = 15;
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_MMC_HS200:
+ /* For 200MHz clock, 8 Taps are available */
+ tap_max = 8;
+ default:
+ break;
+ }
+
+ tap_delay = (degrees * tap_max) / 360;
+
+ arasan_zynqmp_set_tapdelay(priv->deviceid, 0, tap_delay);
+
+ return ret;
+}
+
+/**
+ * sdhci_zynqmp_sampleclk_set_phase - Set the SD Input Clock Tap Delays
+ *
+ * Set the SD Input Clock Tap Delays for Input path
+ *
+ * @host: Pointer to the sdhci_host structure.
+ * @degrees: The clock phase shift between 0 - 359.
+ * Return: 0 on success and error value on error
+ */
+static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
+ int degrees)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u8 tap_delay, tap_max = 0;
+ int ret;
+ int timing = mode2timing[mmc->selected_mode];
+
+ /*
+ * This is applicable for SDHCI_SPEC_300 and above
+ * ZynqMP does not set phase for <=25MHz clock.
+ * If degrees is zero, no need to do anything.
+ */
+ if (SDHCI_GET_VERSION(host) < SDHCI_SPEC_300 ||
+ timing == MMC_TIMING_LEGACY ||
+ timing == MMC_TIMING_UHS_SDR12 || !degrees)
+ return 0;
+
+ switch (timing) {
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_UHS_SDR25:
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
+ /* For 50MHz clock, 120 Taps are available */
+ tap_max = 120;
+ break;
+ case MMC_TIMING_UHS_SDR50:
+ /* For 100MHz clock, 60 Taps are available */
+ tap_max = 60;
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_MMC_HS200:
+ /* For 200MHz clock, 30 Taps are available */
+ tap_max = 30;
+ default:
+ break;
+ }
+
+ tap_delay = (degrees * tap_max) / 360;
+
+ arasan_zynqmp_set_tapdelay(priv->deviceid, tap_delay, 0);
+
+ return ret;
+}
+
+/**
+ * sdhci_versal_sdcardclk_set_phase - Set the SD Output Clock Tap Delays
+ *
+ * Set the SD Output Clock Tap Delays for Output path
+ *
+ * @host: Pointer to the sdhci_host structure.
+ * @degrees The clock phase shift between 0 - 359.
+ * Return: 0 on success and error value on error
+ */
+static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
+ int degrees)
+{
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u8 tap_delay, tap_max = 0;
+ int ret;
+ int timing = mode2timing[mmc->selected_mode];
+
+ /*
+ * This is applicable for SDHCI_SPEC_300 and above
+ * Versal does not set phase for <=25MHz clock.
+ * If degrees is zero, no need to do anything.
+ */
+ if (SDHCI_GET_VERSION(host) < SDHCI_SPEC_300 ||
+ timing == MMC_TIMING_LEGACY ||
+ timing == MMC_TIMING_UHS_SDR12 || !degrees)
+ return 0;
+
+ switch (timing) {
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_UHS_SDR25:
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
+ /* For 50MHz clock, 30 Taps are available */
+ tap_max = 30;
+ break;
+ case MMC_TIMING_UHS_SDR50:
+ /* For 100MHz clock, 15 Taps are available */
+ tap_max = 15;
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_MMC_HS200:
+ /* For 200MHz clock, 8 Taps are available */
+ tap_max = 8;
+ default:
+ break;
+ }
+
+ tap_delay = (degrees * tap_max) / 360;
+
+ /* Set the Clock Phase */
+ if (tap_delay) {
+ u32 regval;
+
+ regval = sdhci_readl(host, SDHCI_ARASAN_OTAPDLY_REGISTER);
+ regval |= SDHCI_OTAPDLY_ENABLE;
+ sdhci_writel(host, regval, SDHCI_ARASAN_OTAPDLY_REGISTER);
+ regval |= tap_delay;
+ sdhci_writel(host, regval, SDHCI_ARASAN_OTAPDLY_REGISTER);
+ }
+
+ return ret;
+}
+
+/**
+ * sdhci_versal_sampleclk_set_phase - Set the SD Input Clock Tap Delays
+ *
+ * Set the SD Input Clock Tap Delays for Input path
+ *
+ * @host: Pointer to the sdhci_host structure.
+ * @degrees The clock phase shift between 0 - 359.
+ * Return: 0 on success and error value on error
+ */
+static int sdhci_versal_sampleclk_set_phase(struct sdhci_host *host,
+ int degrees)
+{
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u8 tap_delay, tap_max = 0;
+ int ret;
+ int timing = mode2timing[mmc->selected_mode];
+
+ /*
+ * This is applicable for SDHCI_SPEC_300 and above
+ * Versal does not set phase for <=25MHz clock.
+ * If degrees is zero, no need to do anything.
+ */
+ if (SDHCI_GET_VERSION(host) < SDHCI_SPEC_300 ||
+ timing == MMC_TIMING_LEGACY ||
+ timing == MMC_TIMING_UHS_SDR12 || !degrees)
+ return 0;
+
+ switch (timing) {
+ case MMC_TIMING_MMC_HS:
+ case MMC_TIMING_SD_HS:
+ case MMC_TIMING_UHS_SDR25:
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
+ /* For 50MHz clock, 120 Taps are available */
+ tap_max = 120;
+ break;
+ case MMC_TIMING_UHS_SDR50:
+ /* For 100MHz clock, 60 Taps are available */
+ tap_max = 60;
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_MMC_HS200:
+ /* For 200MHz clock, 30 Taps are available */
+ tap_max = 30;
+ default:
+ break;
+ }
+
+ tap_delay = (degrees * tap_max) / 360;
+
+ /* Set the Clock Phase */
+ if (tap_delay) {
+ u32 regval;
+
+ regval = sdhci_readl(host, SDHCI_ARASAN_ITAPDLY_REGISTER);
+ regval |= SDHCI_ITAPDLY_CHGWIN;
+ sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
+ regval |= SDHCI_ITAPDLY_ENABLE;
+ sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
+ regval |= tap_delay;
+ sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
+ regval &= ~SDHCI_ITAPDLY_CHGWIN;
+ sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
+ }
+
+ return ret;
+}
+
+static void arasan_sdhci_set_tapdelay(struct sdhci_host *host)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
+ struct arasan_sdhci_clk_data *clk_data = &priv->clk_data;
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ struct udevice *dev = mmc->dev;
+ u8 timing = mode2timing[mmc->selected_mode];
+ u32 iclk_phase = clk_data->clk_phase_in[timing];
+ u32 oclk_phase = clk_data->clk_phase_out[timing];
+
+ dev_dbg(dev, "%s, host:%s, mode:%d\n", __func__, host->name, timing);
+
+ if (IS_ENABLED(CONFIG_ARCH_ZYNQMP) &&
+ device_is_compatible(dev, "xlnx,zynqmp-8.9a")) {
+ sdhci_zynqmp_sampleclk_set_phase(host, iclk_phase);
+ sdhci_zynqmp_sdcardclk_set_phase(host, oclk_phase);
+ } else if (IS_ENABLED(CONFIG_ARCH_VERSAL) &&
+ device_is_compatible(dev, "xlnx,versal-8.9a")) {
+ sdhci_versal_sampleclk_set_phase(host, iclk_phase);
+ sdhci_versal_sdcardclk_set_phase(host, oclk_phase);
+ }
+}
+
+static void arasan_dt_read_clk_phase(struct udevice *dev, unsigned char timing,
+ const char *prop)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(dev);
+ struct arasan_sdhci_clk_data *clk_data = &priv->clk_data;
+ u32 clk_phase[2] = {0};
+
+ /*
+ * Read Tap Delay values from DT, if the DT does not contain the
+ * Tap Values then use the pre-defined values
+ */
+ if (dev_read_u32_array(dev, prop, &clk_phase[0], 2)) {
+ dev_dbg(dev, "Using predefined clock phase for %s = %d %d\n",
+ prop, clk_data->clk_phase_in[timing],
+ clk_data->clk_phase_out[timing]);
+ return;
+ }
+
+ /* The values read are Input and Output Clock Delays in order */
+ clk_data->clk_phase_in[timing] = clk_phase[0];
+ clk_data->clk_phase_out[timing] = clk_phase[1];
+}
+
+/**
+ * arasan_dt_parse_clk_phases - Read Tap Delay values from DT
+ *
+ * Called at initialization to parse the values of Tap Delays.
+ *
+ * @dev: Pointer to our struct udevice.
+ */
+static void arasan_dt_parse_clk_phases(struct udevice *dev)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(dev);
+ struct arasan_sdhci_clk_data *clk_data = &priv->clk_data;
+ int i;
+
+ if (IS_ENABLED(CONFIG_ARCH_ZYNQMP) &&
+ device_is_compatible(dev, "xlnx,zynqmp-8.9a")) {
+ for (i = 0; i <= MMC_TIMING_MMC_HS400; i++) {
+ clk_data->clk_phase_in[i] = zynqmp_iclk_phases[i];
+ clk_data->clk_phase_out[i] = zynqmp_oclk_phases[i];
+ }
+
+ if (priv->bank == MMC_BANK2) {
+ clk_data->clk_phase_out[MMC_TIMING_UHS_SDR104] = 90;
+ clk_data->clk_phase_out[MMC_TIMING_MMC_HS200] = 90;
+ }
+ }
+
+ if (IS_ENABLED(CONFIG_ARCH_VERSAL) &&
+ device_is_compatible(dev, "xlnx,versal-8.9a")) {
+ for (i = 0; i <= MMC_TIMING_MMC_HS400; i++) {
+ clk_data->clk_phase_in[i] = versal_iclk_phases[i];
+ clk_data->clk_phase_out[i] = versal_oclk_phases[i];
+ }
+ }
+
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_LEGACY,
+ "clk-phase-legacy");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_MMC_HS,
+ "clk-phase-mmc-hs");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_SD_HS,
+ "clk-phase-sd-hs");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_UHS_SDR12,
+ "clk-phase-uhs-sdr12");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_UHS_SDR25,
+ "clk-phase-uhs-sdr25");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_UHS_SDR50,
+ "clk-phase-uhs-sdr50");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_UHS_SDR104,
+ "clk-phase-uhs-sdr104");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_UHS_DDR50,
+ "clk-phase-uhs-ddr50");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_MMC_DDR52,
+ "clk-phase-mmc-ddr52");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_MMC_HS200,
+ "clk-phase-mmc-hs200");
+ arasan_dt_read_clk_phase(dev, MMC_TIMING_MMC_HS400,
+ "clk-phase-mmc-hs400");
+}
+
+static void arasan_sdhci_set_control_reg(struct sdhci_host *host)
+{
+ struct mmc *mmc = (struct mmc *)host->mmc;
+ u32 reg;
+
+ if (!IS_SD(mmc))
+ return;
+
+ if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {
+ reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ reg |= SDHCI_CTRL_VDD_180;
+ sdhci_writew(host, reg, SDHCI_HOST_CONTROL2);
+ }
+
+ if (mmc->selected_mode > SD_HS &&
+ mmc->selected_mode <= MMC_HS_200)
+ sdhci_set_uhs_timing(host);
+}
+
+const struct sdhci_ops arasan_ops = {
+ .platform_execute_tuning = &arasan_sdhci_execute_tuning,
+ .set_delay = &arasan_sdhci_set_tapdelay,
+ .set_control_reg = &arasan_sdhci_set_control_reg,
+};
+#endif
+
+static int arasan_sdhci_probe(struct udevice *dev)
+{
+ struct arasan_sdhci_plat *plat = dev_get_plat(dev);
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct arasan_sdhci_priv *priv = dev_get_priv(dev);
+ struct sdhci_host *host;
+ struct clk clk;
+ unsigned long clock;
+ int ret;
+
+ host = priv->host;
+
+ ret = clk_get_by_index(dev, 0, &clk);
+ if (ret < 0) {
+ dev_err(dev, "failed to get clock\n");
+ return ret;
+ }
+
+ clock = clk_get_rate(&clk);
+ if (IS_ERR_VALUE(clock)) {
+ dev_err(dev, "failed to get rate\n");
+ return clock;
+ }
+
+ debug("%s: CLK %ld\n", __func__, clock);
+
+ ret = clk_enable(&clk);
+ if (ret) {
+ dev_err(dev, "failed to enable clock\n");
+ return ret;
+ }
+
+ host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
+ SDHCI_QUIRK_BROKEN_R1B;
+
+#ifdef CONFIG_ZYNQ_HISPD_BROKEN
+ host->quirks |= SDHCI_QUIRK_BROKEN_HISPD_MODE;
+#endif
+
+ if (priv->no_1p8)
+ host->quirks |= SDHCI_QUIRK_NO_1_8_V;
+
+ plat->cfg.f_max = CONFIG_ZYNQ_SDHCI_MAX_FREQ;
+
+ ret = mmc_of_parse(dev, &plat->cfg);
+ if (ret)
+ return ret;
+
+ host->max_clk = clock;
+
+ host->mmc = &plat->mmc;
+ host->mmc->dev = dev;
+ host->mmc->priv = host;
+
+ ret = sdhci_setup_cfg(&plat->cfg, host, plat->cfg.f_max,
+ CONFIG_ZYNQ_SDHCI_MIN_FREQ);
+ if (ret)
+ return ret;
+ upriv->mmc = host->mmc;
+
+ return sdhci_probe(dev);
+}
+
+static int arasan_sdhci_of_to_plat(struct udevice *dev)
+{
+ struct arasan_sdhci_priv *priv = dev_get_priv(dev);
+
+ priv->host = calloc(1, sizeof(struct sdhci_host));
+ if (!priv->host)
+ return -1;
+
+ priv->host->name = dev->name;
+
+#if defined(CONFIG_ARCH_ZYNQMP) || defined(CONFIG_ARCH_VERSAL)
+ priv->host->ops = &arasan_ops;
+ arasan_dt_parse_clk_phases(dev);
+#endif
+
+ priv->host->ioaddr = (void *)dev_read_addr(dev);
+ if (IS_ERR(priv->host->ioaddr))
+ return PTR_ERR(priv->host->ioaddr);
+
+ priv->deviceid = dev_read_u32_default(dev, "xlnx,device_id", -1);
+ priv->bank = dev_read_u32_default(dev, "xlnx,mio-bank", 0);
+ priv->no_1p8 = dev_read_bool(dev, "no-1-8-v");
+
+ return 0;
+}
+
+static int arasan_sdhci_bind(struct udevice *dev)
+{
+ struct arasan_sdhci_plat *plat = dev_get_plat(dev);
+
+ return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id arasan_sdhci_ids[] = {
+ { .compatible = "arasan,sdhci-8.9a" },
+ { }
+};
+
+U_BOOT_DRIVER(arasan_sdhci_drv) = {
+ .name = "arasan_sdhci",
+ .id = UCLASS_MMC,
+ .of_match = arasan_sdhci_ids,
+ .of_to_plat = arasan_sdhci_of_to_plat,
+ .ops = &sdhci_ops,
+ .bind = arasan_sdhci_bind,
+ .probe = arasan_sdhci_probe,
+ .priv_auto = sizeof(struct arasan_sdhci_priv),
+ .plat_auto = sizeof(struct arasan_sdhci_plat),
+};