From: Ashok Reddy Soma ashok.reddy.soma@xilinx.com

This reverts commit 942b5fc03218d1c94468fc658e7dec65dabcc830.

This is partial revert of the above commit.

mmc_of_parse() is reading no-1-8-v from device tree and if set, it is clearing the UHS speed capabilities of cfg->host_caps. cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 | MMC_MODE_HS400 | MMC_MODE_HS400_ES);

This is still missing to clear UHS speeds like SDHCI_SUPPORT_SDR104, SDHCI_SUPPORT_SDR50 and SDHCI_SUPPORT_DDR50.

Even if we clear the flags SDHCI_SUPPORT_XXX in mmc_of_parse(), these speed flags are getting set again in cfg->host_caps in sdhci_setup_cfg().

The reason for this is, SDHCI_SUPPORT_XXX flags are cleared only if controller is not capable of supporting MMC_VDD_165_195 volts.

if (caps & SDHCI_CAN_VDD_180) cfg->voltages |= MMC_VDD_165_195;

if (!(cfg->voltages & MMC_VDD_165_195)) caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);

It means "no-1-8-v", which is read from DT is not coming in to effect. So it is better we keep the host quirks(SDHCI_QUIRK_NO_1_8_V) to clear UHS speeds based on no-1-8-v from device tree.

Hence revert the functionality related to no-1-8-v only, rest is fine in the patch.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Jaehoon Chung jh80.chung@samsung.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

(no changes since v1)

drivers/mmc/sdhci.c | 3 ++- drivers/mmc/zynq_sdhci.c | 5 +++++ include/sdhci.h | 1 + 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index d549a264d73b..06289343124e 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -812,7 +812,8 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, cfg->host_caps &= ~MMC_MODE_HS_52MHz; }

- if (!(cfg->voltages & MMC_VDD_165_195)) + if (!(cfg->voltages & MMC_VDD_165_195) || + (host->quirks & SDHCI_QUIRK_NO_1_8_V)) caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index 775c17baac5b..88e478ee11c1 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -28,6 +28,7 @@ struct arasan_sdhci_priv { struct sdhci_host *host; u8 deviceid; u8 bank; + u8 no_1p8; };

#if defined(CONFIG_ARCH_ZYNQMP) @@ -236,6 +237,9 @@ static int arasan_sdhci_probe(struct udevice *dev) 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); @@ -277,6 +281,7 @@ static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)

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; } diff --git a/include/sdhci.h b/include/sdhci.h index f69d5f81fb1b..1fd20ec0860b 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -244,6 +244,7 @@ #define SDHCI_QUIRK_BROKEN_HISPD_MODE BIT(5) #define SDHCI_QUIRK_WAIT_SEND_CMD (1 << 6) #define SDHCI_QUIRK_USE_WIDE8 (1 << 8) +#define SDHCI_QUIRK_NO_1_8_V (1 << 9)

/* to make gcc happy */ struct sdhci_host;

Just group macros below headers. Other patches will be using this location too.

Signed-off-by: Michal Simek michal.simek@xilinx.com Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

(no changes since v1)

drivers/mmc/zynq_sdhci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index 4f62bd008d24..998a38450680 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -19,6 +19,8 @@ #include <sdhci.h> #include <zynqmp_tap_delay.h>

+#define SDHCI_TUNING_LOOP_COUNT 40 + struct arasan_sdhci_plat { struct mmc_config cfg; struct mmc mmc; @@ -46,8 +48,6 @@ static const u8 mode2timing[] = { [MMC_HS_200] = MMC_TIMING_MMC_HS200, };

-#define SDHCI_TUNING_LOOP_COUNT 40 - static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u8 deviceid) { u16 clk;

Define input and output clock phase delays with pre-defined values.

Define arasan_sdhci_clk_data type structure and add it to priv structure and store these clock phase delays in it.

Read input and output clock phase delays from dt. If these values are not passed through dt, use pre-defined values.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

(no changes since v1)

drivers/mmc/zynq_sdhci.c | 85 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index 998a38450680..e69f375cce07 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -20,6 +20,12 @@ #include <zynqmp_tap_delay.h>

#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; @@ -28,12 +34,17 @@ struct arasan_sdhci_plat {

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) +/* 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}; + static const u8 mode2timing[] = { [MMC_LEGACY] = MMC_TIMING_LEGACY, [MMC_HS] = MMC_TIMING_MMC_HS, @@ -168,6 +179,79 @@ static void arasan_sdhci_set_tapdelay(struct sdhci_host *host) priv->bank); }

+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; + } + } + + 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; @@ -271,6 +355,7 @@ static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)

#if defined(CONFIG_ARCH_ZYNQMP) priv->host->ops = &arasan_ops; + arasan_dt_parse_clk_phases(dev); #endif

priv->host->ioaddr = (void *)dev_read_addr(dev);

From: Ashok Reddy Soma ashok.reddy.soma@xilinx.com

Define and use functions for setting input and output tapdelays based on clk phase delays.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com

---

Changes in v3: - replace host->version by SDHCI_GET_VERSION(host) reported by Jaehoon

drivers/mmc/zynq_sdhci.c | 128 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 123 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index e69f375cce07..8871765711d4 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -166,17 +166,135 @@ static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode) 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; +} + 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); + } }

static void arasan_dt_read_clk_phase(struct udevice *dev, unsigned char timing,

From: Ashok Reddy Soma ashok.reddy.soma@xilinx.com

Define default values for input and output clock phase delays for Versal. Also define functions for setting tapdelays based on these clock phase delays.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

Changes in v3: - replace host->version by SDHCI_GET_VERSION(host) reported by Jaehoon

drivers/mmc/zynq_sdhci.c | 160 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 156 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index 8871765711d4..d55ba74b2c38 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -19,6 +19,12 @@ #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

@@ -40,11 +46,15 @@ struct arasan_sdhci_priv { 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, @@ -278,6 +288,138 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host, 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); @@ -294,6 +436,10 @@ static void arasan_sdhci_set_tapdelay(struct sdhci_host *host) 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); } }

@@ -346,6 +492,14 @@ static void arasan_dt_parse_clk_phases(struct udevice *dev) } }

+ 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, @@ -388,9 +542,7 @@ static void arasan_sdhci_set_control_reg(struct sdhci_host *host) mmc->selected_mode <= UHS_DDR50) 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, @@ -471,7 +623,7 @@ static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)

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

From: Ashok Reddy Soma ashok.reddy.soma@xilinx.com

Fix the condition to set UHS timings for speeds upto HS200.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

(no changes since v1)

drivers/mmc/zynq_sdhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index d55ba74b2c38..147ecc0d708d 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -539,7 +539,7 @@ static void arasan_sdhci_set_control_reg(struct sdhci_host *host) }

if (mmc->selected_mode > SD_HS && - mmc->selected_mode <= UHS_DDR50) + mmc->selected_mode <= MMC_HS_200) sdhci_set_uhs_timing(host); }

From: Ashok Reddy Soma ashok.reddy.soma@xilinx.com

Remove setting tapdelays for different speeds separately. Instead use the ITAP and OTAP delay values which are read from the device tree. If the DT does not contain tap delay values, the predefined values will be used for the same.

Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Peng Fan peng.fan@nxp.com ---

(no changes since v2)

Changes in v2: - Add common function to set tapdelays based on the values read from DT - Remove tapdelay settings based on speed

board/xilinx/zynqmp/tap_delays.c | 190 ++++++------------------------- include/zynqmp_tap_delay.h | 5 +- 2 files changed, 36 insertions(+), 159 deletions(-)

diff --git a/board/xilinx/zynqmp/tap_delays.c b/board/xilinx/zynqmp/tap_delays.c index 813650cabcc4..c4770c8fb6e9 100644 --- a/board/xilinx/zynqmp/tap_delays.c +++ b/board/xilinx/zynqmp/tap_delays.c @@ -6,6 +6,7 @@ */

#include <common.h> +#include <zynqmp_tap_delay.h> #include <asm/arch/sys_proto.h> #include <linux/delay.h>

@@ -25,34 +26,9 @@ #define SD1_ITAPDLYENA_MASK 0x01000000 #define SD1_ITAPDLYENA 0x01000000 #define SD0_ITAPDLYSEL_MASK 0x000000FF -#define SD0_ITAPDLYSEL_HSD 0x00000015 -#define SD0_ITAPDLYSEL_SD_DDR50 0x0000003D -#define SD0_ITAPDLYSEL_MMC_DDR50 0x00000012 - #define SD1_ITAPDLYSEL_MASK 0x00FF0000 -#define SD1_ITAPDLYSEL_HSD 0x00150000 -#define SD1_ITAPDLYSEL_SD_DDR50 0x003D0000 -#define SD1_ITAPDLYSEL_MMC_DDR50 0x00120000 - #define SD0_OTAPDLYSEL_MASK 0x0000003F -#define SD0_OTAPDLYSEL_MMC_HSD 0x00000006 -#define SD0_OTAPDLYSEL_SD_HSD 0x00000005 -#define SD0_OTAPDLYSEL_SDR50 0x00000003 -#define SD0_OTAPDLYSEL_SDR104_B0 0x00000003 -#define SD0_OTAPDLYSEL_SDR104_B2 0x00000002 -#define SD0_OTAPDLYSEL_SD_DDR50 0x00000004 -#define SD0_OTAPDLYSEL_MMC_DDR50 0x00000006 - #define SD1_OTAPDLYSEL_MASK 0x003F0000 -#define SD1_OTAPDLYSEL_MMC_HSD 0x00060000 -#define SD1_OTAPDLYSEL_SD_HSD 0x00050000 -#define SD1_OTAPDLYSEL_SDR50 0x00030000 -#define SD1_OTAPDLYSEL_SDR104_B0 0x00030000 -#define SD1_OTAPDLYSEL_SDR104_B2 0x00020000 -#define SD1_OTAPDLYSEL_SD_DDR50 0x00040000 -#define SD1_OTAPDLYSEL_MMC_DDR50 0x00060000 - -#define MMC_BANK2 0x2

void zynqmp_dll_reset(u8 deviceid) { @@ -73,149 +49,49 @@ void zynqmp_dll_reset(u8 deviceid) zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0); }

-static void arasan_zynqmp_tap_sdr104(u8 deviceid, u8 timing, u8 bank) -{ - if (deviceid == 0) { - /* Program OTAP */ - if (bank == MMC_BANK2) - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_SDR104_B2); - else - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_SDR104_B0); - } else { - /* Program OTAP */ - if (bank == MMC_BANK2) - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_SDR104_B2); - else - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_SDR104_B0); - } -} - -static void arasan_zynqmp_tap_hs(u8 deviceid, u8 timing, u8 bank) -{ - if (deviceid == 0) { - /* Program ITAP */ - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, - SD0_ITAPCHGWIN); - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK, - SD0_ITAPDLYENA); - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, - SD0_ITAPDLYSEL_HSD); - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0); - /* Program OTAP */ - if (timing == MMC_TIMING_MMC_HS) - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_MMC_HSD); - else - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_SD_HSD); - } else { - /* Program ITAP */ - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, - SD1_ITAPCHGWIN); - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK, - SD1_ITAPDLYENA); - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, - SD1_ITAPDLYSEL_HSD); - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0); - /* Program OTAP */ - if (timing == MMC_TIMING_MMC_HS) - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_MMC_HSD); - else - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_SD_HSD); - } -} - -static void arasan_zynqmp_tap_ddr50(u8 deviceid, u8 timing, u8 bank) +void arasan_zynqmp_set_tapdelay(u8 deviceid, u32 itap_delay, u32 otap_delay) { if (deviceid == 0) { + zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, + SD0_DLL_RST); /* Program ITAP */ - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, - SD0_ITAPCHGWIN); - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK, - SD0_ITAPDLYENA); - if (timing == MMC_TIMING_UHS_DDR50) - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, - SD0_ITAPDLYSEL_SD_DDR50); - else + if (itap_delay) { + zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, + SD0_ITAPCHGWIN); + zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK, + SD0_ITAPDLYENA); zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, - SD0_ITAPDLYSEL_MMC_DDR50); - zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0); + itap_delay); + zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, + 0x0); + } + /* Program OTAP */ - if (timing == MMC_TIMING_UHS_DDR50) - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_SD_DDR50); - else + if (otap_delay) zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_MMC_DDR50); - } else { - /* Program ITAP */ - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, - SD1_ITAPCHGWIN); - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK, - SD1_ITAPDLYENA); - if (timing == MMC_TIMING_UHS_DDR50) - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, - SD1_ITAPDLYSEL_SD_DDR50); - else - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, - SD1_ITAPDLYSEL_MMC_DDR50); - zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0); - /* Program OTAP */ - if (timing == MMC_TIMING_UHS_DDR50) - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_SD_DDR50); - else - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_MMC_DDR50); - } -} + otap_delay);

-static void arasan_zynqmp_tap_sdr50(u8 deviceid, u8 timing, u8 bank) -{ - if (deviceid == 0) { - /* Program OTAP */ - zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, - SD0_OTAPDLYSEL_SDR50); + zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0); } else { - /* Program OTAP */ - zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, - SD1_OTAPDLYSEL_SDR50); - } -} - -void arasan_zynqmp_set_tapdelay(u8 deviceid, u8 timing, u8 bank) -{ - if (deviceid == 0) - zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, - SD0_DLL_RST); - else zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, SD1_DLL_RST); + /* Program ITAP */ + if (itap_delay) { + zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, + SD1_ITAPCHGWIN); + zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK, + SD1_ITAPDLYENA); + zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, + (itap_delay << 16)); + zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, + 0x0); + }

- switch (timing) { - case MMC_TIMING_UHS_SDR25: - arasan_zynqmp_tap_hs(deviceid, timing, bank); - break; - case MMC_TIMING_UHS_SDR50: - arasan_zynqmp_tap_sdr50(deviceid, timing, bank); - break; - case MMC_TIMING_UHS_SDR104: - case MMC_TIMING_MMC_HS200: - arasan_zynqmp_tap_sdr104(deviceid, timing, bank); - break; - case MMC_TIMING_UHS_DDR50: - arasan_zynqmp_tap_ddr50(deviceid, timing, bank); - break; - } + /* Program OTAP */ + if (otap_delay) + zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, + (otap_delay << 16));

- if (deviceid == 0) - zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0); - else zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0); + } } diff --git a/include/zynqmp_tap_delay.h b/include/zynqmp_tap_delay.h index b07e3e069224..7b713438f752 100644 --- a/include/zynqmp_tap_delay.h +++ b/include/zynqmp_tap_delay.h @@ -10,10 +10,11 @@

#ifdef CONFIG_ARCH_ZYNQMP void zynqmp_dll_reset(u8 deviceid); -void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank); +void arasan_zynqmp_set_tapdelay(u8 device_id, u32 itap_delay, u32 otap_delay); #else inline void zynqmp_dll_reset(u8 deviceid) {} -inline void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank) {} +inline void arasan_zynqmp_set_tapdelay(u8 device_id, u32 itap_delay, + u32 otap_delay) {} #endif

#endif