#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
u8 no_1p8;
};
-#if defined(CONFIG_ARCH_ZYNQMP)
+#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,
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;
- u8 uhsmode;
+ 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];
- uhsmode = mode2timing[mmc->selected_mode];
+ dev_dbg(dev, "%s, host:%s, mode:%d\n", __func__, host->name, timing);
- if (uhsmode >= UHS_SDR25_BUS_SPEED)
- arasan_zynqmp_set_tapdelay(priv->deviceid, uhsmode,
- priv->bank);
+ 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,
}
}
+ 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,
}
if (mmc->selected_mode > SD_HS &&
- mmc->selected_mode <= UHS_DDR50)
+ mmc->selected_mode <= MMC_HS_200)
sdhci_set_uhs_timing(host);
}
-#endif
-#if defined(CONFIG_ARCH_ZYNQMP)
const struct sdhci_ops arasan_ops = {
.platform_execute_tuning = &arasan_sdhci_execute_tuning,
.set_delay = &arasan_sdhci_set_tapdelay,
priv->host->name = dev->name;
-#if defined(CONFIG_ARCH_ZYNQMP)
+#if defined(CONFIG_ARCH_ZYNQMP) || defined(CONFIG_ARCH_VERSAL)
priv->host->ops = &arasan_ops;
arasan_dt_parse_clk_phases(dev);
#endif
.ops = &sdhci_ops,
.bind = arasan_sdhci_bind,
.probe = arasan_sdhci_probe,
- .priv_auto_alloc_size = sizeof(struct arasan_sdhci_priv),
- .platdata_auto_alloc_size = sizeof(struct arasan_sdhci_plat),
+ .priv_auto = sizeof(struct arasan_sdhci_priv),
+ .platdata_auto = sizeof(struct arasan_sdhci_plat),
};
projects / platform / kernel / u-boot.git / blobdiff