[U-Boot] [PATCH 05/11] ARM: OMAP4+: Add support for getting pbias info from board
Lokesh Vutla
lokeshvutla at ti.com
Wed Nov 23 08:55:28 CET 2016
Palmas driver assumes it is always TPS659xx regulator on all DRA7xx based
boards to enable mmc regulator. This is not true always like in case of
DRA71x-evm. So get this information based on the board.
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
Signed-off-by: Vignesh R <vigneshr at ti.com>
Signed-off-by: Nishanth Menon <nm at ti.com>
---
arch/arm/include/asm/omap_mmc.h | 2 +-
arch/arm/mach-omap2/omap4/hwinit.c | 13 +++++++++++++
arch/arm/mach-omap2/omap5/hwinit.c | 34 ++++++++++++++++++++++++++++++++++
drivers/mmc/omap_hsmmc.c | 33 ++-------------------------------
drivers/power/palmas.c | 21 ++++++++++++++++++++-
include/palmas.h | 13 ++++++++++++-
6 files changed, 82 insertions(+), 34 deletions(-)
diff --git a/arch/arm/include/asm/omap_mmc.h b/arch/arm/include/asm/omap_mmc.h
index b69d073..f2bf645 100644
--- a/arch/arm/include/asm/omap_mmc.h
+++ b/arch/arm/include/asm/omap_mmc.h
@@ -167,5 +167,5 @@ struct hsmmc {
int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
int wp_gpio);
-
+void vmmc_pbias_config(uint voltage);
#endif /* OMAP_MMC_H_ */
diff --git a/arch/arm/mach-omap2/omap4/hwinit.c b/arch/arm/mach-omap2/omap4/hwinit.c
index 7c6638c..67ab1cc 100644
--- a/arch/arm/mach-omap2/omap4/hwinit.c
+++ b/arch/arm/mach-omap2/omap4/hwinit.c
@@ -12,6 +12,7 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <palmas.h>
#include <asm/armv7.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
@@ -175,3 +176,15 @@ void v7_outer_cache_disable(void)
omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 0);
}
#endif /* !CONFIG_SYS_L2CACHE_OFF */
+
+void vmmc_pbias_config(uint voltage)
+{
+ u32 value = 0;
+
+ value = readl((*ctrl)->control_pbiaslite);
+ value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
+ writel(value, (*ctrl)->control_pbiaslite);
+ value = readl((*ctrl)->control_pbiaslite);
+ value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
+ writel(value, (*ctrl)->control_pbiaslite);
+}
diff --git a/arch/arm/mach-omap2/omap5/hwinit.c b/arch/arm/mach-omap2/omap5/hwinit.c
index e3ac8bb..839d79d 100644
--- a/arch/arm/mach-omap2/omap5/hwinit.c
+++ b/arch/arm/mach-omap2/omap5/hwinit.c
@@ -13,6 +13,7 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <palmas.h>
#include <asm/armv7.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
@@ -451,3 +452,36 @@ void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
#endif
omap_smc1(OMAP5_SERVICE_ACR_SET, acr);
}
+
+#if defined(CONFIG_PALMAS_POWER)
+void vmmc_pbias_config(uint voltage)
+{
+ u32 value = 0;
+ struct vcores_data const *vcores = *omap_vcores;
+
+ value = readl((*ctrl)->control_pbias);
+ value &= ~SDCARD_PWRDNZ;
+ writel(value, (*ctrl)->control_pbias);
+ udelay(10); /* wait 10 us */
+ value &= ~SDCARD_BIAS_PWRDNZ;
+ writel(value, (*ctrl)->control_pbias);
+
+ if (vcores->core.pmic->i2c_slave_addr == 0x60) {
+ if (voltage == LDO_VOLT_3V0)
+ voltage = 0x19;
+ else if (voltage == LDO_VOLT_1V8)
+ voltage = 0xa;
+ lp873x_mmc1_poweron_ldo(voltage);
+ } else {
+ palmas_mmc1_poweron_ldo(voltage);
+ }
+
+ value = readl((*ctrl)->control_pbias);
+ value |= SDCARD_BIAS_PWRDNZ;
+ writel(value, (*ctrl)->control_pbias);
+ udelay(150); /* wait 150 us */
+ value |= SDCARD_PWRDNZ;
+ writel(value, (*ctrl)->control_pbias);
+ udelay(150); /* wait 150 us */
+}
+#endif
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index fceafe1..0d824a6 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -110,30 +110,6 @@ static void omap4_vmmc_pbias_config(struct mmc *mmc)
}
#endif
-#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
-static void omap5_pbias_config(struct mmc *mmc)
-{
- u32 value = 0;
-
- value = readl((*ctrl)->control_pbias);
- 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_PWRDNZ;
- writel(value, (*ctrl)->control_pbias);
- udelay(150); /* wait 150 us */
- value |= SDCARD_PWRDNZ;
- writel(value, (*ctrl)->control_pbias);
- udelay(150); /* wait 150 us */
-}
-#endif
-
static unsigned char mmc_board_init(struct mmc *mmc)
{
#if defined(CONFIG_OMAP34XX)
@@ -173,14 +149,10 @@ static unsigned char mmc_board_init(struct mmc *mmc)
&prcm_base->iclken1_core);
#endif
-#if defined(CONFIG_OMAP44XX)
+#if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
/* PBIAS config needed for MMC1 only */
if (mmc->block_dev.devnum == 0)
- omap4_vmmc_pbias_config(mmc);
-#endif
-#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
- if (mmc->block_dev.devnum == 0)
- omap5_pbias_config(mmc);
+ vmmc_pbias_config(LDO_VOLT_3V0);
#endif
return 0;
@@ -214,7 +186,6 @@ void mmc_init_stream(struct hsmmc *mmc_base)
writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
}
-
static int omap_hsmmc_init_setup(struct mmc *mmc)
{
struct hsmmc *mmc_base;
diff --git a/drivers/power/palmas.c b/drivers/power/palmas.c
index 6430fe0..70cc6e9 100644
--- a/drivers/power/palmas.c
+++ b/drivers/power/palmas.c
@@ -23,7 +23,26 @@ void palmas_init_settings(void)
#endif
}
-int palmas_mmc1_poweron_ldo(void)
+#if defined(CONFIG_OMAP54XX)
+int lp873x_mmc1_poweron_ldo(uint voltage)
+{
+ if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE,
+ voltage)) {
+ printf("lp873x: could not set LDO1 voltage.\n");
+ return 1;
+ }
+ /* TURN ON LDO1 */
+ if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL,
+ LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) {
+ printf("lp873x: could not turn on LDO1.\n");
+ return 1;
+ }
+ return 0;
+
+}
+#endif
+
+int palmas_mmc1_poweron_ldo(uint voltage)
{
u8 val = 0;
diff --git a/include/palmas.h b/include/palmas.h
index cca3f9a..d676617 100644
--- a/include/palmas.h
+++ b/include/palmas.h
@@ -24,6 +24,16 @@
#define LDO1_CTRL 0x50
#define LDO1_VOLTAGE 0x51
+/* LDO1 control/voltage for LP873x */
+#define LP873X_LDO1_ADDR 0x60
+#define LP873X_LDO1_CTRL 0x9
+#define LP873X_LDO1_VOLTAGE 0xa
+#define LP873X_LDO_VOLT_3V0 0x19
+#define LP873X_LDO_VOLT_1V8 0xa
+#define LP873X_LDO_CTRL_EN (0x1 << 0)
+#define LP873X_LDO_CTRL_EN_PINCTRL (0x1 << 1)
+#define LP873X_LDO_CTRL_RDIS_EN (0x1 << 2)
+
/* LDO2 control/voltage */
#define LDO2_CTRL 0x52
#define LDO2_VOLTAGE 0x53
@@ -119,7 +129,8 @@ static inline int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *val)
}
void palmas_init_settings(void);
-int palmas_mmc1_poweron_ldo(void);
+int palmas_mmc1_poweron_ldo(uint voltage);
+int lp873x_mmc1_poweron_ldo(uint voltage);
int twl603x_mmc1_set_ldo9(u8 vsel);
int twl603x_audio_power(u8 on);
int twl603x_enable_bb_charge(u8 bb_fields);
--
2.10.1
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