msm8916: lk: Android SD Card boot

msm8916: lk: Needed changes for the Android SD Card Boot Change-Id: I8af6a2527f4f8063d25a46bce30590289f376ede Signed-off-by: Baji Patthan <bpatth@codeaurora.org> (cherry picked from commit 3bac025eb7a081f7f1598fdb5e7cb0c25912bdf0) (cherry picked from commit f3d777e1394aa2690a19075b6a6ebde772805b91)
pevik · Jul 19, 2021 · 1cd872e · 1cd872e
1 parent d7ac6af
commit 1cd872e
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Showing 2 changed files with 43 additions and 12 deletions.
diff --git a/platform/msm8916/include/platform/iomap.h b/platform/msm8916/include/platform/iomap.h
@@ -127,6 +127,7 @@
 #define SDCC1_N                     (CLK_CTL_BASE + 0x42010) /* n */
 #define SDCC1_D                     (CLK_CTL_BASE + 0x42014) /* d */
 
+#define SDC2_HDRV_PULL_CTL          (TLMM_BASE_ADDR + 0x109000)
 #define SDCC2_BCR                   (CLK_CTL_BASE + 0x43000) /* block reset */
 #define SDCC2_APPS_CBCR             (CLK_CTL_BASE + 0x43018) /* branch control */
 #define SDCC2_AHB_CBCR              (CLK_CTL_BASE + 0x4301C)

diff --git a/target/msm8916/init.c b/target/msm8916/init.c
@@ -80,7 +80,7 @@
 #define CE_WRITE_PIPE_LOCK_GRP  0
 #define CE_ARRAY_SIZE           20
 
-static void set_sdc_power_ctrl(void);
+static void set_sdc_power_ctrl(uint8_t slot);
 
 struct mmc_device *dev;
 
@@ -112,18 +112,20 @@ void target_sdc_init()
 {
 	struct mmc_config_data config;
 
-	/* Set drive strength & pull ctrl values */
-	set_sdc_power_ctrl();
 
-	config.bus_width = DATA_BUS_WIDTH_8BIT;
+	config.bus_width = DATA_BUS_WIDTH_4BIT;
 	config.max_clk_rate = MMC_CLK_177MHZ;
 
 	/* Try slot 1*/
-	config.slot         = 1;
+	config.slot         = MMC_SLOT;
 	config.sdhc_base    = mmc_sdhci_base[config.slot - 1];
 	config.pwrctl_base  = mmc_pwrctl_base[config.slot - 1];
 	config.pwr_irq      = mmc_sdc_pwrctl_irq[config.slot - 1];
 	config.hs400_support = 0;
+	dprintf(CRITICAL, "initialising mmc_slot =%u\n",MMC_SLOT);
+
+	/* Set drive strength & pull ctrl values */
+	set_sdc_power_ctrl(config.slot);
 
 	if (!(dev = mmc_init(&config))) {
 	/* Try slot 2 */
@@ -133,6 +135,9 @@ void target_sdc_init()
 		config.pwrctl_base  = mmc_pwrctl_base[config.slot - 1];
 		config.pwr_irq      = mmc_sdc_pwrctl_irq[config.slot - 1];
 
+		/* Set drive strength & pull ctrl values */
+		set_sdc_power_ctrl(config.slot);
+
 		if (!(dev = mmc_init(&config))) {
 			dprintf(CRITICAL, "mmc init failed!");
 			ASSERT(0);
@@ -346,22 +351,47 @@ int emmc_recovery_init(void)
 	return _emmc_recovery_init();
 }
 
-static void set_sdc_power_ctrl()
+static void set_sdc_power_ctrl(uint8_t slot)
 {
+	uint32_t reg = 0;
+	uint8_t clk;
+	uint8_t cmd;
+	uint8_t dat;
+
+	if(slot == 1)
+	{
+		clk = TLMM_CUR_VAL_16MA;
+		cmd = TLMM_CUR_VAL_10MA;
+		dat = TLMM_CUR_VAL_10MA;
+		reg = SDC1_HDRV_PULL_CTL;
+	}
+	else if(slot == 2)
+	{
+		clk = TLMM_CUR_VAL_16MA;
+		cmd = TLMM_CUR_VAL_10MA;
+		dat = TLMM_CUR_VAL_10MA;
+		reg = SDC2_HDRV_PULL_CTL;
+	}
+	else
+	{
+		dprintf(CRITICAL,"Unsupported SDC slot passed\n");
+		return;
+	}
+
 	/* Drive strength configs for sdc pins */
 	struct tlmm_cfgs sdc1_hdrv_cfg[] =
 	{
-		{ SDC1_CLK_HDRV_CTL_OFF,  TLMM_CUR_VAL_16MA, TLMM_HDRV_MASK },
-		{ SDC1_CMD_HDRV_CTL_OFF,  TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK },
-		{ SDC1_DATA_HDRV_CTL_OFF, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK },
+		{ SDC1_CLK_HDRV_CTL_OFF,  clk, TLMM_HDRV_MASK, reg },
+		{ SDC1_CMD_HDRV_CTL_OFF,  cmd, TLMM_HDRV_MASK, reg },
+		{ SDC1_DATA_HDRV_CTL_OFF, dat, TLMM_HDRV_MASK, reg },
 	};
 
 	/* Pull configs for sdc pins */
 	struct tlmm_cfgs sdc1_pull_cfg[] =
 	{
-		{ SDC1_CLK_PULL_CTL_OFF,  TLMM_NO_PULL, TLMM_PULL_MASK },
-		{ SDC1_CMD_PULL_CTL_OFF,  TLMM_PULL_UP, TLMM_PULL_MASK },
-		{ SDC1_DATA_PULL_CTL_OFF, TLMM_PULL_UP, TLMM_PULL_MASK },
+		{ SDC1_CLK_PULL_CTL_OFF,  TLMM_NO_PULL, TLMM_PULL_MASK, reg },
+		{ SDC1_CMD_PULL_CTL_OFF,  TLMM_PULL_UP, TLMM_PULL_MASK, reg },
+		{ SDC1_DATA_PULL_CTL_OFF, TLMM_PULL_UP, TLMM_PULL_MASK, reg },
 	};
 
 	/* Set the drive strength & pull control values */