storage: emmc: Add HS400 busmode support for G12B-RevB [1/1]

PD#SWPL-5040

Problem:
not support HS400 busmode

Solution:
add HS400 busmode support for G12B-RevB

Verify:
T962X-R311,TL1-T962X2_X301,G12B-W400

Change-Id: I11a1f47b9473fa341c7d754a51d6e270551758a7
Signed-off-by: long yu <long.yu@amlogic.com>

diff --git a/arch/arm/boot/dts/amlogic/g12b_a311d_w400.dts b/arch/arm/boot/dts/amlogic/g12b_a311d_w400.dts
index 9a6d701..d2f9141 100644 (file)
--- a/arch/arm/boot/dts/amlogic/g12b_a311d_w400.dts
+++ b/arch/arm/boot/dts/amlogic/g12b_a311d_w400.dts
@@ -1186,9 +1186,9 @@
                        /* "MMC_CAP_1_8V_DDR", */
                         "MMC_CAP_HW_RESET",
                         "MMC_CAP_ERASE",
-                        "MMC_CAP_CMD23";
-               caps2 = "MMC_CAP2_HS200";
-               /* "MMC_CAP2_HS400";*/
+                        "MMC_CAP_CMD23",
+                        "MMC_CAP_DRIVER_TYPE_A";
+               caps2 = "MMC_CAP2_HS200", "MMC_CAP2_HS400";
                f_min = <400000>;
                f_max = <200000000>;
        };

diff --git a/arch/arm/boot/dts/amlogic/mesong12b.dtsi b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
index 5873b9c..0962fd8 100644 (file)
--- a/arch/arm/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
@@ -1423,8 +1423,9 @@
                           <&clkc CLKID_SD_EMMC_C_P0_COMP>,
                           <&clkc CLKID_FCLK_DIV2>,
                           <&clkc CLKID_FCLK_DIV5>,
+                          <&clkc CLKID_FCLK_DIV2P5>,
                           <&xtal>;
-               clock-names = "core", "clkin0", "clkin1", "clkin2", "xtal";
+               clock-names = "core","clkin0","clkin1","clkin2","clkin3","xtal";
 
                bus-width = <8>;
                cap-sd-highspeed;

diff --git a/arch/arm64/boot/dts/amlogic/g12b_a311d_w400.dts b/arch/arm64/boot/dts/amlogic/g12b_a311d_w400.dts
index 9a70c6a..6302195 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/g12b_a311d_w400.dts
+++ b/arch/arm64/boot/dts/amlogic/g12b_a311d_w400.dts
@@ -1186,9 +1186,9 @@
                        /* "MMC_CAP_1_8V_DDR", */
                         "MMC_CAP_HW_RESET",
                         "MMC_CAP_ERASE",
-                        "MMC_CAP_CMD23";
-               caps2 = "MMC_CAP2_HS200";
-               /* "MMC_CAP2_HS400";*/
+                        "MMC_CAP_CMD23",
+                        "MMC_CAP_DRIVER_TYPE_A";
+               caps2 = "MMC_CAP2_HS200", "MMC_CAP2_HS400";
                f_min = <400000>;
                f_max = <200000000>;
        };

diff --git a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
index 7cf0a05..062c813 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
@@ -1423,8 +1423,9 @@
                           <&clkc CLKID_SD_EMMC_C_P0_COMP>,
                           <&clkc CLKID_FCLK_DIV2>,
                           <&clkc CLKID_FCLK_DIV5>,
+                          <&clkc CLKID_FCLK_DIV2P5>,
                           <&xtal>;
-               clock-names = "core", "clkin0", "clkin1", "clkin2", "xtal";
+               clock-names = "core","clkin0","clkin1","clkin2","clkin3","xtal";
 
                bus-width = <8>;
                cap-sd-highspeed;

diff --git a/drivers/amlogic/clk/g12a/g12a_clk_sdemmc.c b/drivers/amlogic/clk/g12a/g12a_clk_sdemmc.c
index 6ee8f91..0912789 100644 (file)
--- a/drivers/amlogic/clk/g12a/g12a_clk_sdemmc.c
+++ b/drivers/amlogic/clk/g12a/g12a_clk_sdemmc.c
@@ -27,7 +27,7 @@
 #include "g12a.h"
 
 static const char * const sd_emmc_parent_names[] = { "xtal", "fclk_div2",
-       "fclk_div3", "fclk_div5", "fclk_div7", "mpll2", "mpll3", "gp0_pll" };
+       "fclk_div3", "fclk_div5", "fclk_div2p5", "mpll2", "mpll3", "gp0_pll" };
 
 static struct clk_mux sd_emmc_p0_mux_A = {
        .reg = (void *)HHI_SD_EMMC_CLK_CNTL,

diff --git a/drivers/amlogic/mmc/aml_sd_emmc.c b/drivers/amlogic/mmc/aml_sd_emmc.c
index 9cb1d42..f679829 100644 (file)
--- a/drivers/amlogic/mmc/aml_sd_emmc.c
+++ b/drivers/amlogic/mmc/aml_sd_emmc.c
@@ -3325,6 +3325,16 @@ static int meson_mmc_probe(struct platform_device *pdev)
 #endif /* CONFIG_MESON_CPU_EMULATOR */
        }
        pr_info("%s() : success!\n", __func__);
+       if (host->ctrl_ver >= 3) {
+               ret = device_create_file(&pdev->dev, &dev_attr_emmc_eyetest);
+               if (ret)
+                       dev_warn(mmc_dev(host->mmc),
+                                       "Unable to creat sysfs attributes\n");
+               ret = device_create_file(&pdev->dev, &dev_attr_emmc_clktest);
+               if (ret)
+                       dev_warn(mmc_dev(host->mmc),
+                                       "Unable to creat sysfs attributes\n");
+       }
        return 0;
 
 free_host:
@@ -3554,9 +3564,11 @@ static struct meson_mmc_data mmc_data_g12b = {
        .sdmmc.hs.core_phase = 1,
        .sdmmc.ddr.core_phase = 2,
        .sdmmc.ddr.tx_phase = 0,
-       .sdmmc.hs2.core_phase = 3,
+       .sdmmc.hs2.core_phase = 2,
        .sdmmc.hs2.tx_phase = 0,
-       .sdmmc.hs4.tx_delay = 0,
+       .sdmmc.hs4.tx_phase = 0,
+       .sdmmc.hs4.core_phase = 0,
+       .sdmmc.hs4.tx_delay = 16,
        .sdmmc.sd_hs.core_phase = 2,
        .sdmmc.sdr104.core_phase = 2,
        .sdmmc.sdr104.tx_phase = 0,

diff --git a/drivers/amlogic/mmc/aml_sd_emmc_v3.c b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
index bfc495a..79f362a 100644 (file)
--- a/drivers/amlogic/mmc/aml_sd_emmc_v3.c
+++ b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
@@ -231,7 +231,10 @@ static int meson_mmc_clk_set_rate_v3(struct mmc_host *mmc,
 
        if (aml_card_type_mmc(pdata)) {
                if ((clk_ios >= 200000000) && conf->ddr) {
-                       src0_clk = devm_clk_get(host->dev, "clkin2");
+                       if (host->data->chip_type == MMC_CHIP_G12B)
+                               src0_clk = devm_clk_get(host->dev, "clkin3");
+                       else
+                               src0_clk = devm_clk_get(host->dev, "clkin2");
                        ret = clk_set_parent(host->mux_parent[0], src0_clk);
                        if (ret)
                                pr_warn("set src0 as comp0 parent error\n");
@@ -239,13 +242,18 @@ static int meson_mmc_clk_set_rate_v3(struct mmc_host *mmc,
                                        host->mux_parent[0]);
                        if (ret)
                                pr_warn("set comp0 as mux_clk parent error\n");
-               } else if ((host->data->chip_type == MMC_CHIP_TL1)
+               } else if (((host->data->chip_type == MMC_CHIP_TL1)
+                               || (host->data->chip_type == MMC_CHIP_G12B))
                                && (clk_ios >= 166000000)) {
                        src0_clk = devm_clk_get(host->dev, "clkin3");
                        if (ret)
-                               pr_warn("not get GP0\n");
-                       ret = clk_set_rate(src0_clk, 792000000);
-                       pr_warn("set rate gp0>>>>>>>>>clk:%lu\n",
+                               pr_warn("not get clkin3\n");
+                       if (host->data->chip_type == MMC_CHIP_TL1) {
+                               ret = clk_set_rate(src0_clk, 792000000);
+                               if (ret)
+                                       pr_warn("not set tl1-792\n");
+                       }
+                       pr_warn("set rate clkin3>>>>>>>>clk:%lu\n",
                                        clk_get_rate(src0_clk));
                        ret = clk_set_parent(host->mux_parent[0],
                                        src0_clk);
@@ -290,11 +298,11 @@ static int meson_mmc_clk_set_rate_v3(struct mmc_host *mmc,
                pdata->stop_clk = 0;
        }
 #endif
-       pr_debug("actual_clock :%u, HHI_nand: 0x%x\n",
+       pr_info("actual_clock :%u, HHI_nand: 0x%x\n",
                        mmc->actual_clock,
                        readl(host->clksrc_base + (HHI_NAND_CLK_CNTL << 2)));
 
-       pr_debug("[%s] after clock: 0x%x\n",
+       pr_info("[%s] after clock: 0x%x\n",
                 __func__, readl(host->base + SD_EMMC_CLOCK_V3));
 
        return ret;
@@ -342,7 +350,8 @@ static void aml_sd_emmc_set_timing_v3(struct amlsd_platform *pdata,
                                if (pdata->tx_delay != 0)
                                        clkc->tx_delay = pdata->tx_delay;
 
-                               if ((host->data->chip_type == MMC_CHIP_TL1)
+                               if (((host->data->chip_type == MMC_CHIP_TL1)
+                               || (host->data->chip_type == MMC_CHIP_G12B))
                                        && aml_card_type_mmc(pdata)) {
                                        clkc->core_phase = para->hs4.core_phase;
                                        clkc->tx_phase = para->hs4.tx_phase;
@@ -643,7 +652,7 @@ irqreturn_t meson_mmc_irq_thread_v3(int irq, void *dev_id)
 }
 
 static int aml_sd_emmc_cali_v3(struct mmc_host *mmc,
-       u8 opcode, u8 *blk_test, u32 blksz, u32 blocks)
+       u8 opcode, u8 *blk_test, u32 blksz, u32 blocks, u8 *pattern)
 {
        struct amlsd_platform *pdata = mmc_priv(mmc);
        struct amlsd_host *host = pdata->host;
@@ -654,7 +663,14 @@ static int aml_sd_emmc_cali_v3(struct mmc_host *mmc,
        struct scatterlist sg;
 
        cmd.opcode = opcode;
-       cmd.arg = ((SZ_1M * (36 + 3)) / 512);
+       if (!strcmp(pattern, MMC_PATTERN_NAME))
+               cmd.arg = MMC_PATTERN_OFFSET;
+       else if (!strcmp(pattern, MMC_MAGIC_NAME))
+               cmd.arg = MMC_MAGIC_OFFSET;
+       else if (!strcmp(pattern, MMC_RANDOM_NAME))
+               cmd.arg = MMC_RANDOM_OFFSET;
+       else if (!strcmp(pattern, MMC_DTB_NAME))
+               cmd.arg = MMC_DTB_OFFSET;
        cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 
        stop.opcode = MMC_STOP_TRANSMISSION;
@@ -678,6 +694,28 @@ static int aml_sd_emmc_cali_v3(struct mmc_host *mmc,
        return data.error | cmd.error;
 }
 
+static int emmc_test_bus(struct mmc_host *mmc)
+{
+       int err = 0;
+       u32 blksz = 512;
+       struct amlsd_platform *pdata = mmc_priv(mmc);
+       struct amlsd_host *host = pdata->host;
+
+       err = aml_sd_emmc_cali_v3(mmc, MMC_READ_MULTIPLE_BLOCK,
+                               host->blk_test, blksz, 40, MMC_PATTERN_NAME);
+       if (err)
+               return err;
+       err = aml_sd_emmc_cali_v3(mmc, MMC_READ_MULTIPLE_BLOCK,
+                               host->blk_test, blksz, 80, MMC_RANDOM_NAME);
+       if (err)
+               return err;
+       err = aml_sd_emmc_cali_v3(mmc, MMC_READ_MULTIPLE_BLOCK,
+                               host->blk_test, blksz, 40, MMC_MAGIC_NAME);
+       if (err)
+               return err;
+       return err;
+}
+
 static int emmc_send_cmd(struct mmc_host *mmc, u32 opcode,
                u32 arg, unsigned int flags)
 {
@@ -752,7 +790,7 @@ RETRY:
        if (line_x < 9)
                aml_sd_emmc_cali_v3(mmc,
                        MMC_READ_MULTIPLE_BLOCK,
-                       host->blk_test, blksz, 40);
+                       host->blk_test, blksz, 40, MMC_PATTERN_NAME);
        else
                aml_sd_emmc_cmd_v3(mmc);
        host->is_tunning = 0;
@@ -781,7 +819,7 @@ RETRY:
        writel(0, host->base + SD_EMMC_ADJUST_V3);
        pdata->intf3 = intf3;
        pdata->align[line_x] = ((tmp | eyetest_out1) << 32) | eyetest_out0;
-       pr_info("d1:0x%x,d2:0x%x,u64eyet:0x%016llx,l_x:%d\n",
+       pr_debug("d1:0x%x,d2:0x%x,u64eyet:0x%016llx,l_x:%d\n",
                        readl(host->base + SD_EMMC_DELAY1_V3),
                        readl(host->base + SD_EMMC_DELAY2_V3),
                        pdata->align[line_x], line_x);
@@ -1042,7 +1080,6 @@ static int emmc_ds_manual_sht(struct mmc_host *mmc)
        struct amlsd_host *host = pdata->host;
        u32 intf3 = readl(host->base + SD_EMMC_INTF3);
        struct intf3 *gintf3 = (struct intf3 *)&(intf3);
-       u32 blksz = 512;
        int i, err = 0;
        int match[64];
        int best_start = -1, best_size = -1;
@@ -1050,18 +1087,16 @@ static int emmc_ds_manual_sht(struct mmc_host *mmc)
 
        host->is_tunning = 1;
        for (i = 0; i < 64; i++) {
-               gintf3->ds_sht_m += 1;
-               writel(intf3, host->base + SD_EMMC_INTF3);
-               pdata->intf3 = intf3;
-               err = aml_sd_emmc_cali_v3(mmc,
-                       MMC_READ_MULTIPLE_BLOCK,
-                       host->blk_test, blksz, 20);
+               err = emmc_test_bus(mmc);
                pr_debug("intf3: 0x%x, err[%d]: %d\n",
                                readl(host->base + SD_EMMC_INTF3), i, err);
                if (!err)
                        match[i] = 0;
                else
                        match[i] = -1;
+               gintf3->ds_sht_m += 1;
+               writel(intf3, host->base + SD_EMMC_INTF3);
+               pdata->intf3 = intf3;
        }
        for (i = 0; i < 64; i++) {
                if (match[i] == 0) {
@@ -1099,6 +1134,7 @@ static int emmc_ds_manual_sht(struct mmc_host *mmc)
        gintf3->ds_sht_m = best_start + best_size / 2;
        writel(intf3, host->base + SD_EMMC_INTF3);
        pdata->intf3 = intf3;
+       pdata->win_start = best_start;
        pr_info("ds_sht:%u, window:%d, intf3:0x%x, clock:0x%x",
                        gintf3->ds_sht_m, best_size,
                        readl(host->base + SD_EMMC_INTF3),
@@ -1129,6 +1165,98 @@ static void aml_emmc_hs400_tl1(struct mmc_host *mmc)
        emmc_ds_manual_sht(mmc);
 }
 
+static int emmc_data_alignment(struct mmc_host *mmc, int best_size)
+{
+       struct amlsd_platform *pdata = mmc_priv(mmc);
+       struct amlsd_host *host = pdata->host;
+       u32 delay1 = readl(host->base + SD_EMMC_DELAY1_V3);
+       u32 delay2 = readl(host->base + SD_EMMC_DELAY2_V3);
+       u32 intf3 = readl(host->base + SD_EMMC_INTF3);
+       struct intf3 *gintf3 = (struct intf3 *)&(intf3);
+       u32 delay1_bak = delay1;
+       u32 delay2_bak = delay2;
+       u32 intf3_bak = intf3;
+       int line_x, i, err = 0, win_new, blksz = 512;
+       u32 d[8];
+
+       host->is_tunning = 1;
+       gintf3->ds_sht_m = pdata->win_start + 4;
+       writel(intf3, host->base + SD_EMMC_INTF3);
+       for (line_x = 0; line_x < 8; line_x++) {
+               for (i = 0; i < 20; i++) {
+                       if (line_x < 5) {
+                               delay1 += (1 << 6*line_x);
+                               writel(delay1, host->base + SD_EMMC_DELAY1_V3);
+                       } else {
+                               delay2 += (1 << 6*(line_x - 5));
+                               writel(delay2, host->base + SD_EMMC_DELAY2_V3);
+                       }
+                       err = aml_sd_emmc_cali_v3(mmc, MMC_READ_MULTIPLE_BLOCK,
+                               host->blk_test, blksz, 40, MMC_RANDOM_NAME);
+                       if (err) {
+                               pr_info("[%s]adjust line_x[%d]:%d\n",
+                                               __func__, line_x, i);
+                               d[line_x] = i;
+                               delay1 = delay1_bak;
+                               delay2 = delay2_bak;
+                               writel(delay1_bak,
+                                       host->base + SD_EMMC_DELAY1_V3);
+                               writel(delay2_bak,
+                                       host->base + SD_EMMC_DELAY2_V3);
+                               break;
+                       }
+               }
+               if (i == 20) {
+                       pr_info("[%s][%d] return set default value",
+                                       __func__, __LINE__);
+                       writel(delay1_bak, host->base + SD_EMMC_DELAY1_V3);
+                       writel(delay2_bak, host->base + SD_EMMC_DELAY2_V3);
+                       writel(intf3_bak, host->base + SD_EMMC_INTF3);
+                       host->is_tunning = 0;
+                       return -1;
+               }
+       }
+       delay1 += (d[0]<<0)|(d[1]<<6)|(d[2]<<12)|(d[3]<<18)|(d[4]<<24);
+       delay2 += (d[5]<<0)|(d[6]<<6)|(d[7]<<12);
+       writel(delay1, host->base + SD_EMMC_DELAY1_V3);
+       writel(delay2, host->base + SD_EMMC_DELAY2_V3);
+       pr_info("delay1:0x%x, delay2:0x%x\n",
+               readl(host->base + SD_EMMC_DELAY1_V3),
+               readl(host->base + SD_EMMC_DELAY2_V3));
+       gintf3->ds_sht_m = 0;
+       writel(intf3, host->base + SD_EMMC_INTF3);
+       win_new = emmc_ds_manual_sht(mmc);
+       if (win_new < best_size) {
+               pr_info("[%s][%d] win_new:%d < win_old:%d,set default!",
+                       __func__, __LINE__, win_new, best_size);
+               writel(delay1_bak, host->base + SD_EMMC_DELAY1_V3);
+               writel(delay2_bak, host->base + SD_EMMC_DELAY2_V3);
+               writel(intf3_bak, host->base + SD_EMMC_INTF3);
+               pr_info("intf3:0x%x, delay1:0x%x, delay2:0x%x\n",
+                       readl(host->base + SD_EMMC_INTF3),
+                       readl(host->base + SD_EMMC_DELAY1_V3),
+                       readl(host->base + SD_EMMC_DELAY2_V3));
+       }
+       host->is_tunning = 0;
+       return 0;
+}
+
+static void aml_emmc_hs400_Revb(struct mmc_host *mmc)
+{
+       struct amlsd_platform *pdata = mmc_priv(mmc);
+       struct amlsd_host *host = pdata->host;
+       u32 delay2 = 0;
+       int win_size = 0;
+
+       delay2 = readl(host->base + SD_EMMC_DELAY2_V3);
+       delay2 += (pdata->cmd_c<<24);
+       writel(delay2, host->base + SD_EMMC_DELAY2_V3);
+       pr_info("[%s], delay1: 0x%x, delay2: 0x%x\n",
+               __func__, readl(host->base + SD_EMMC_DELAY1_V3),
+               readl(host->base + SD_EMMC_DELAY2_V3));
+       win_size = emmc_ds_manual_sht(mmc);
+       emmc_data_alignment(mmc, win_size);
+}
 /* test clock, return delay cells for one cycle
  */
 static unsigned int aml_sd_emmc_clktest(struct mmc_host *mmc)
@@ -1456,6 +1584,7 @@ int aml_emmc_hs200_tl1(struct mmc_host *mmc)
        int i, err = 0;
 
        clk_bak = vclkc;
+       clkc->tx_phase = para->hs4.tx_phase;
        clkc->core_phase = para->hs4.core_phase;
        clkc->tx_delay = para->hs4.tx_delay;
        if (pdata->tx_delay != 0)
@@ -1471,12 +1600,14 @@ int aml_emmc_hs200_tl1(struct mmc_host *mmc)
                        continue;
                count = fbinary(pdata->align[9]);
                if (((count >= 10) && (count <= 22))
-                       || ((count >= 43) && (count <= 56)))
+                       || ((count >= 45) && (count <= 56)))
                        break;
        }
        if (i == 63)
                pr_err("[%s]no find cmd timing\n", __func__);
        pdata->cmd_c = (delay2 >> 24);
+       pr_info("cmd->u64eyet:0x%016llx\n",
+                       pdata->align[9]);
        writel(0, host->base + SD_EMMC_DELAY2_V3);
        writel(clk_bak, host->base + SD_EMMC_CLOCK_V3);
        pr_info("[%s][%d] clk config:0x%x\n",
@@ -1745,7 +1876,8 @@ int aml_mmc_execute_tuning_v3(struct mmc_host *mmc, u32 opcode)
                intf3 |= (1<<22);
                writel(intf3, (host->base + SD_EMMC_INTF3));
                pdata->intf3 = intf3;
-               if (host->data->chip_type == MMC_CHIP_TL1)
+               if ((host->data->chip_type == MMC_CHIP_TL1)
+                       || (host->data->chip_type == MMC_CHIP_G12B))
                        aml_emmc_hs200_tl1(mmc);
                err = 0;
        }
@@ -1764,8 +1896,74 @@ int aml_post_hs400_timming(struct mmc_host *mmc)
        aml_sd_emmc_clktest(mmc);
        if (host->data->chip_type == MMC_CHIP_TL1)
                aml_emmc_hs400_tl1(mmc);
+       else if (host->data->chip_type == MMC_CHIP_G12B)
+               aml_emmc_hs400_Revb(mmc);
        else
                aml_emmc_hs400_general(mmc);
        return 0;
 }
 
+ssize_t emmc_eyetest_show(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       struct amlsd_host *host = dev_get_drvdata(dev);
+       struct mmc_host *mmc = host->mmc;
+
+       mmc_claim_host(mmc);
+       update_all_line_eyetest(mmc);
+       mmc_release_host(mmc);
+       return sprintf(buf, "%s\n", "Emmc all lines eyetest.\n");
+}
+
+ssize_t emmc_clktest_show(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       struct amlsd_host *host = dev_get_drvdata(dev);
+       struct mmc_host *mmc = host->mmc;
+       u32 intf3 = readl(host->base + SD_EMMC_INTF3);
+       struct intf3 *gintf3 = (struct intf3 *)&(intf3);
+       u32 clktest = 0, delay_cell = 0, clktest_log = 0, count = 0;
+       u32 vcfg = readl(host->base + SD_EMMC_CFG);
+       int i = 0;
+       unsigned int cycle = 0;
+
+       writel(0, (host->base + SD_EMMC_ADJUST_V3));
+
+       /* one cycle = xxx(ps) */
+       cycle = (1000000000 / mmc->actual_clock) * 1000;
+       vcfg &= ~(1 << 23);
+       writel(vcfg, host->base + SD_EMMC_CFG);
+       gintf3->clktest_exp = 8;
+       gintf3->clktest_on_m = 1;
+       writel(intf3, host->base + SD_EMMC_INTF3);
+       clktest_log = readl(host->base + SD_EMMC_CLKTEST_LOG);
+       clktest = readl(host->base + SD_EMMC_CLKTEST_OUT);
+       while (!(clktest_log & 0x80000000)) {
+               udelay(1);
+               i++;
+               clktest_log = readl(host->base + SD_EMMC_CLKTEST_LOG);
+               clktest = readl(host->base + SD_EMMC_CLKTEST_OUT);
+               if (i > 4000) {
+                       pr_warn("[%s] [%d] emmc clktest error\n",
+                               __func__, __LINE__);
+                       break;
+               }
+       }
+       if (clktest_log & 0x80000000) {
+               clktest = readl(host->base + SD_EMMC_CLKTEST_OUT);
+               count = clktest / (1 << 8);
+               if (vcfg & 0x4)
+                       delay_cell = ((cycle / 2) / count);
+               else
+                       delay_cell = (cycle / count);
+       }
+       pr_info("%s [%d] clktest : %u, delay_cell: %d, count: %u\n",
+                       __func__, __LINE__, clktest, delay_cell, count);
+       intf3 = readl(host->base + SD_EMMC_INTF3);
+       gintf3->clktest_on_m = 0;
+       writel(intf3, host->base + SD_EMMC_INTF3);
+       vcfg = readl(host->base + SD_EMMC_CFG);
+       vcfg |= (1 << 23);
+       writel(vcfg, host->base + SD_EMMC_CFG);
+       return count;
+}

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index f8d6df5..ae8b397 100644 (file)
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1131,7 +1131,10 @@ static int mmc_select_hs400(struct mmc_card *card)
        unsigned int max_dtr;
        int err = 0;
        u8 val;
-
+#ifdef CONFIG_AMLOGIC_MMC
+       u8 raw_driver_strength = card->ext_csd.raw_driver_strength;
+       u8 ds = (host->caps >> 23) & 0x7;
+#endif
        /*
         * HS400 mode requires 8-bit bus width
         */
@@ -1175,13 +1178,25 @@ static int mmc_select_hs400(struct mmc_card *card)
 
        /* Switch card to HS400 */
 #ifdef CONFIG_AMLOGIC_MMC
-       if (card->ext_csd.raw_driver_strength & (1 << 1)) {
+       if (ds) {
+               if (ds & (1 << 0)) {
+                       raw_driver_strength &= (1 << 0);
+                       pr_info("%s:use ds type0\n",
+                               mmc_hostname(host));
+       /*3 -> type4 -> MMC_CAP_DRIVER_TYPED*/
+               } else if (ds & (1 << 3)) {
+                       raw_driver_strength &= ~(1 << 1);
+                       pr_info("%s:use ds type4\n",
+                               mmc_hostname(host));
+               }
+       }
+       if (raw_driver_strength & (1 << 1)) {
                val =
                        (0x1 << EXT_CSD_DRV_STR_SHIFT)
                        | EXT_CSD_TIMING_HS400;
                pr_info("%s: support driver strength type 1\n",
                                mmc_hostname(host));
-       } else if (card->ext_csd.raw_driver_strength & (1 << 4)) {
+       } else if (raw_driver_strength & (1 << 4)) {
                val =
                        (0x4 << EXT_CSD_DRV_STR_SHIFT)
                        | EXT_CSD_TIMING_HS400;

diff --git a/include/linux/amlogic/aml_sd_emmc_v3.h b/include/linux/amlogic/aml_sd_emmc_v3.h
index 8e9d96e..de6dab7 100644 (file)
--- a/include/linux/amlogic/aml_sd_emmc_v3.h
+++ b/include/linux/amlogic/aml_sd_emmc_v3.h
@@ -29,15 +29,14 @@ irqreturn_t meson_mmc_irq_thread_v3(int irq, void *dev_id);
 
 int aml_post_hs400_timming(struct mmc_host *mmc);
 
-/* extern ssize_t emmc_eyetest_show(struct device *dev,
- *             struct device_attribute *attr, char *buf);
- */
+extern ssize_t emmc_eyetest_show(struct device *dev,
+               struct device_attribute *attr, char *buf);
 
-/* extern ssize_t emmc_clktest_show(struct device *dev,
- *             struct device_attribute *attr, char *buf);
- */
 
-/* DEVICE_ATTR(emmc_eyetest, S_IRUGO, emmc_eyetest_show, NULL);*/
-/*DEVICE_ATTR(emmc_clktest, S_IRUGO, emmc_clktest_show, NULL);*/
+extern ssize_t emmc_clktest_show(struct device *dev,
+               struct device_attribute *attr, char *buf);
+
 
+DEVICE_ATTR(emmc_eyetest, 0444, emmc_eyetest_show, NULL);
+DEVICE_ATTR(emmc_clktest, 0444, emmc_clktest_show, NULL);
 #endif

diff --git a/include/linux/amlogic/sd.h b/include/linux/amlogic/sd.h
index cae0a23..c051df4 100644 (file)
--- a/include/linux/amlogic/sd.h
+++ b/include/linux/amlogic/sd.h
@@ -279,6 +279,7 @@ struct amlsd_platform {
        unsigned int dly1;
        unsigned int dly2;
        unsigned int intf3;
+       unsigned int win_start;
        unsigned int irq_sdio_sleep;
        unsigned int clock;
        /* signalling voltage (1.8V or 3.3V) */

diff --git a/include/linux/mmc/emmc_partitions.h b/include/linux/mmc/emmc_partitions.h
index aea6f69..e9adda0 100644 (file)
--- a/include/linux/mmc/emmc_partitions.h
+++ b/include/linux/mmc/emmc_partitions.h
@@ -25,6 +25,14 @@
 
 #define     SZ_1M                           0x00100000
 
+#define        MMC_PATTERN_NAME                "pattern"
+#define        MMC_PATTERN_OFFSET              ((SZ_1M*(36+3))/512)
+#define        MMC_MAGIC_NAME                  "magic"
+#define        MMC_MAGIC_OFFSET                ((SZ_1M*(36+6))/512)
+#define        MMC_RANDOM_NAME                 "random"
+#define        MMC_RANDOM_OFFSET               ((SZ_1M*(36+7))/512)
+#define        MMC_DTB_NAME                    "dtb"
+#define        MMC_DTB_OFFSET                  ((SZ_1M*(36+4))/512)
 /* the size of bootloader partition */
 #define     MMC_BOOT_PARTITION_SIZE         (4*SZ_1M)