mmc: omap_hsmmc: Update pbias programming

Update pbias programming sequence for OMAP5 ES2.0/DRA7

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/include/asm/arch-omap5/omap.h

@@ -106,9 +106,9 @@
 /* CONTROL_EFUSE_2 */
 #define CONTROL_EFUSE_2_NMOS_PMOS_PTV_CODE_1		0x00ffc000
 
+#define SDCARD_BIAS_PWRDNZ				(1 << 27)
 #define SDCARD_PWRDNZ					(1 << 26)
 #define SDCARD_BIAS_HIZ_MODE				(1 << 25)
-#define SDCARD_BIAS_PWRDNZ				(1 << 22)
 #define SDCARD_PBIASLITE_VMODE				(1 << 21)
 
 #ifndef __ASSEMBLY__

drivers/mmc/omap_hsmmc.c

@@ -113,23 +113,21 @@ static void omap5_pbias_config(struct mmc *mmc)
 	u32 value = 0;
 
 	value = readl((*ctrl)->control_pbias);
-	value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
-	value |= SDCARD_BIAS_HIZ_MODE;
+	value &= ~SDCARD_PWRDNZ;
+	writel(value, (*ctrl)->control_pbias);
+	udelay(10); /* wait 10 us */
+	value &= ~SDCARD_BIAS_PWRDNZ;
 	writel(value, (*ctrl)->control_pbias);
 
 	palmas_mmc1_poweron_ldo();
 
 	value = readl((*ctrl)->control_pbias);
-	value &= ~SDCARD_BIAS_HIZ_MODE;
-	value |= SDCARD_PBIASLITE_VMODE | SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ;
+	value |= SDCARD_BIAS_PWRDNZ;
 	writel(value, (*ctrl)->control_pbias);
-
-	value = readl((*ctrl)->control_pbias);
-	if (value & (1 << 23)) {
-		value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
-		value |= SDCARD_BIAS_HIZ_MODE;
-		writel(value, (*ctrl)->control_pbias);
-	}
+	udelay(150); /* wait 150 us */
+	value |= SDCARD_PWRDNZ;
+	writel(value, (*ctrl)->control_pbias);
+	udelay(150); /* wait 150 us */
 }
 #endif
 

include/configs/omap5_common.h

@@ -238,6 +238,10 @@
 #define CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
 #endif
 
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_PALMAS_POWER
+#endif
+
 /* Defines for SPL */
 #define CONFIG_SPL
 #define CONFIG_SPL_FRAMEWORK

include/configs/omap5_uevm.h

@@ -39,11 +39,6 @@
 #define CONFIG_SYS_NS16550_COM3		UART3_BASE
 #define CONFIG_BAUDRATE			115200
 
-/* TWL6035 */
-#ifndef CONFIG_SPL_BUILD
-#define CONFIG_PALMAS_POWER
-#endif
-
 /* MMC ENV related defines */
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV		1	/* SLOT2: eMMC(1) */