[U-Boot] [PATCH 1/4] imx: mx6slevk: Add I2C1 support

[U-Boot] [PATCH 1/4] imx: mx6slevk: Add I2C1 support

[Ye.Li]

Add I2C1 pin and pad settings, and enable the MXC I2C driver.

Signed-off-by: Ye.Li <B37916@freescale.com>
---
 arch/arm/include/asm/arch-mx6/mx6sl_pins.h |    5 +++++
 board/freescale/mx6slevk/mx6slevk.c        |   26 ++++++++++++++++++++++++++
 include/configs/mx6slevk.h                 |    6 ++++++
 3 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
index 045ccc4..ac84270 100644
--- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
+++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
@@ -34,5 +34,10 @@ enum {
 	MX6_PAD_FEC_REF_CLK__FEC_REF_OUT			= IOMUX_PAD(0x424, 0x134, 0x10, 0x000, 0, 0),
 	MX6_PAD_FEC_RX_ER__GPIO_4_19				= IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0),
 	MX6_PAD_FEC_TX_CLK__GPIO_4_21				= IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0),
+
+	MX6_PAD_I2C1_SDA__I2C1_SDA					= IOMUX_PAD(0x0450, 0x0160, 0x10, 0x0720, 2, 0),
+	MX6_PAD_I2C1_SDA__GPIO_3_13					= IOMUX_PAD(0x0450, 0x0160, 5, 0x0000, 0, 0),
+	MX6_PAD_I2C1_SCL__I2C1_SCL					= IOMUX_PAD(0x044C, 0x015C, 0x10, 0x071C, 2, 0),
+	MX6_PAD_I2C1_SCL__GPIO_3_12					= IOMUX_PAD(0x044C, 0x015C, 5, 0x0000, 0, 0),
 };
 #endif	/* __ASM_ARCH_MX6_MX6SL_PINS_H__ */
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index a990b4c..fedd5c3 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -13,12 +13,14 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
 #include <asm/io.h>
 #include <linux/sizes.h>
 #include <common.h>
 #include <fsl_esdhc.h>
 #include <mmc.h>
 #include <netdev.h>
+#include <i2c.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -37,8 +39,29 @@ DECLARE_GLOBAL_DATA_PTR;
 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
 		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
 
+#define I2C_PAD_CTRL    (PAD_CTL_PKE | PAD_CTL_PUE |            \
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
+	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
+	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
 #define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)
 
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+/* I2C1 for PMIC */
+struct i2c_pads_info i2c_pad_info0 = {
+	.sda = {
+		.i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,
+		.gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,
+		.gp = IMX_GPIO_NR(3, 13),
+	},
+	.scl = {
+		.i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,
+		.gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,
+		.gp = IMX_GPIO_NR(3, 12),
+	},
+};
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -162,6 +185,9 @@ int board_init(void)
 #ifdef	CONFIG_FEC_MXC
 	setup_fec();
 #endif
+
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
+
 	return 0;
 }
 
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
index 3d05a64..bf5066f 100644
--- a/include/configs/mx6slevk.h
+++ b/include/configs/mx6slevk.h
@@ -60,6 +60,12 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_SMSC
 
+/* I2C Configs */
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_SPEED		  100000
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX		1
-- 
1.7.4.1

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Ye.Li]

Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
has Pfuze100 or Pfuze200, print the chip type by parsing the ID.

Signed-off-by: Ye.Li <B37916@freescale.com>
---
 board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
 include/configs/mx6slevk.h          |    7 ++++
 2 files changed, 64 insertions(+), 0 deletions(-)

diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index fedd5c3..8b6a79c 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -21,6 +21,8 @@
 #include <mmc.h>
 #include <netdev.h>
 #include <i2c.h>
+#include <power/pmic.h>
+#include <power/pfuze100_pmic.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 
+#define I2C_PMIC	0
+
 /* I2C1 for PMIC */
 struct i2c_pads_info i2c_pad_info0 = {
 	.sda = {
@@ -191,6 +195,59 @@ int board_init(void)
 	return 0;
 }
 
+static int pfuze_init(void)
+{
+	struct pmic *p;
+	int ret;
+	unsigned int reg;
+
+	ret = power_pfuze100_init(I2C_PMIC);
+	if (ret)
+		return ret;
+
+	p = pmic_get("PFUZE100");
+	ret = pmic_probe(p);
+	if (ret)
+		return ret;
+
+	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
+	printf("PMIC:  PFUZE%s ID=0x%02x\n",
+		((reg & 0xf) == 0) ? "100" : "200", reg);
+
+	/* Set SW1AB stanby volage to 0.975V */
+	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
+	reg &= ~0x3f;
+	reg |= 0x1b;
+	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
+
+	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
+	reg &= ~0xc0;
+	reg |= 0x40;
+	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
+
+	/* Set SW1C standby voltage to 0.975V */
+	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
+	reg &= ~0x3f;
+	reg |= 0x1b;
+	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
+
+	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
+	reg &= ~0xc0;
+	reg |= 0x40;
+	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	pfuze_init();
+
+	return 0;
+}
+
 u32 get_board_rev(void)
 {
 	return get_cpu_rev();
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
index bf5066f..09d0896 100644
--- a/include/configs/mx6slevk.h
+++ b/include/configs/mx6slevk.h
@@ -30,6 +30,7 @@
 #define CONFIG_SYS_MALLOC_LEN		(3 * SZ_1M)
 
 #define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_BOARD_LATE_INIT
 #define CONFIG_MXC_GPIO
 
 #define CONFIG_MXC_UART
@@ -66,6 +67,12 @@
 #define CONFIG_SYS_I2C_MXC
 #define CONFIG_SYS_I2C_SPEED		  100000
 
+/* PMIC */
+#define CONFIG_POWER
+#define CONFIG_POWER_I2C
+#define CONFIG_POWER_PFUZE100
+#define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX		1
-- 
1.7.4.1

[U-Boot] [PATCH 3/4] imx: mx6sabresd: Add clear print for pfuze200

[Ye.Li]

Add clear print log to show pfuze200 or pfuze100 found on mx6sabresd.

Signed-off-by: Ye.Li <B37916@freescale.com>
---
 board/freescale/mx6sabresd/mx6sabresd.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index 5f65f1b..72d6562 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -472,7 +472,8 @@ static int pfuze_init(void)
 		return ret;
 
 	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
-	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
+	printf("PMIC:  PFUZE%s ID=0x%02x\n",
+		((reg & 0xf) == 0) ? "100" : "200", reg);
 
 	/* Increase VGEN3 from 2.5 to 2.8V */
 	pmic_reg_read(p, PFUZE100_VGEN3VOL, &reg);
-- 
1.7.4.1

[U-Boot] [PATCH 4/4] imx: mx6: Set Pfuze mode to decrease power number for DSM

[Ye.Li]

Set all switches APS mode in normal and PFM mode in standby. So when
mx6 entering DSM mode, the power number can be decreased. There is
no impact for mx6 in run mode.

Changes for boards:
-mx6 sabreauto
-mx6 sabresd
-mx6slevk
-mx6sxsabresd

Signed-off-by: Ye.Li <B37916@freescale.com>
---
 board/freescale/mx6qsabreauto/mx6qsabreauto.c |   36 +++++++++++++++++++++++++
 board/freescale/mx6sabresd/mx6sabresd.c       |   36 +++++++++++++++++++++++++
 board/freescale/mx6slevk/mx6slevk.c           |   36 +++++++++++++++++++++++++
 board/freescale/mx6sxsabresd/mx6sxsabresd.c   |   36 +++++++++++++++++++++++++
 4 files changed, 144 insertions(+), 0 deletions(-)

diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index 76b024b..9e79915 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -263,6 +263,37 @@ int board_init(void)
 	return 0;
 }
 
+/* set all switches APS in normal and PFM mode in standby */
+static int pfuze_setup_mode(struct pmic *p, int chip)
+{
+	unsigned char offset, i, switch_num, value;
+
+	if (!chip) {
+		/* pfuze100 */
+		switch_num = 6;
+		offset = 0x31;
+	} else {
+		/* pfuze200 */
+		switch_num = 4;
+		offset = 0x38;
+	}
+
+	value = 0xc;
+	if (pmic_reg_write(p, 0x23, value)) {
+		printf("Set SW1AB mode error!\n");
+		return -1;
+	}
+
+	for (i = 0; i < switch_num - 1; i++) {
+		if (pmic_reg_write(p, offset + i * 7, value)) {
+			printf("Set switch%x mode error!\n", offset);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
 static int pfuze_init(void)
 {
 	struct pmic *p;
@@ -281,6 +312,11 @@ static int pfuze_init(void)
 	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 
+	if (pfuze_setup_mode(p, (reg & 0xf))) {
+		printf("setup pfuze mode error!\n");
+		return -1;
+	}
+
 	/* Set SW1AB stanby volage to 0.975V */
 	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
 	reg &= ~0x3f;
diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index 72d6562..810fe13 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -456,6 +456,37 @@ int board_init(void)
 	return 0;
 }
 
+/* set all switches APS in normal and PFM mode in standby */
+static int pfuze_setup_mode(struct pmic *p, int chip)
+{
+	unsigned char offset, i, switch_num, value;
+
+	if (!chip) {
+		/* pfuze100 */
+		switch_num = 6;
+		offset = 0x31;
+	} else {
+		/* pfuze200 */
+		switch_num = 4;
+		offset = 0x38;
+	}
+
+	value = 0xc;
+	if (pmic_reg_write(p, 0x23, value)) {
+		printf("Set SW1AB mode error!\n");
+		return -1;
+	}
+
+	for (i = 0; i < switch_num - 1; i++) {
+		if (pmic_reg_write(p, offset + i * 7, value)) {
+			printf("Set switch%x mode error!\n", offset);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
 static int pfuze_init(void)
 {
 	struct pmic *p;
@@ -475,6 +506,11 @@ static int pfuze_init(void)
 	printf("PMIC:  PFUZE%s ID=0x%02x\n",
 		((reg & 0xf) == 0) ? "100" : "200", reg);
 
+	if (pfuze_setup_mode(p, (reg & 0xf))) {
+		printf("setup pfuze mode error!\n");
+		return -1;
+	}
+
 	/* Increase VGEN3 from 2.5 to 2.8V */
 	pmic_reg_read(p, PFUZE100_VGEN3VOL, &reg);
 	reg &= ~0xf;
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index 8b6a79c..fe5e37d 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -195,6 +195,37 @@ int board_init(void)
 	return 0;
 }
 
+/* set all switches APS in normal and PFM mode in standby */
+static int pfuze_setup_mode(struct pmic *p, int chip)
+{
+	unsigned char offset, i, switch_num, value;
+
+	if (!chip) {
+		/* pfuze100 */
+		switch_num = 6;
+		offset = 0x31;
+	} else {
+		/* pfuze200 */
+		switch_num = 4;
+		offset = 0x38;
+	}
+
+	value = 0xc;
+	if (pmic_reg_write(p, 0x23, value)) {
+		printf("Set SW1AB mode error!\n");
+		return -1;
+	}
+
+	for (i = 0; i < switch_num - 1; i++) {
+		if (pmic_reg_write(p, offset + i * 7, value)) {
+			printf("Set switch%x mode error!\n", offset);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
 static int pfuze_init(void)
 {
 	struct pmic *p;
@@ -214,6 +245,11 @@ static int pfuze_init(void)
 	printf("PMIC:  PFUZE%s ID=0x%02x\n",
 		((reg & 0xf) == 0) ? "100" : "200", reg);
 
+	if (pfuze_setup_mode(p, (reg & 0xf))) {
+		printf("setup pfuze mode error!\n");
+		return -1;
+	}
+
 	/* Set SW1AB stanby volage to 0.975V */
 	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
 	reg &= ~0x3f;
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 80d2d99..d6a33cd 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -170,6 +170,37 @@ struct i2c_pads_info i2c_pad_info1 = {
 	},
 };
 
+/* set all switches APS in normal and PFM mode in standby */
+static int pfuze_setup_mode(struct pmic *p, int chip)
+{
+	unsigned char offset, i, switch_num, value;
+
+	if (!chip) {
+		/* pfuze100 */
+		switch_num = 6;
+		offset = 0x31;
+	} else {
+		/* pfuze200 */
+		switch_num = 4;
+		offset = 0x38;
+	}
+
+	value = 0xc;
+	if (pmic_reg_write(p, 0x23, value)) {
+		printf("Set SW1AB mode error!\n");
+		return -1;
+	}
+
+	for (i = 0; i < switch_num - 1; i++) {
+		if (pmic_reg_write(p, offset + i * 7, value)) {
+			printf("Set switch%x mode error!\n", offset);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
 static int pfuze_init(void)
 {
 	struct pmic *p;
@@ -188,6 +219,11 @@ static int pfuze_init(void)
 	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 
+	if (pfuze_setup_mode(p, (reg & 0xf))) {
+		printf("setup pfuze mode error!\n");
+		return -1;
+	}
+
 	/* Set SW1AB standby voltage to 0.975V */
 	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
 	reg &= ~0x3f;
-- 
1.7.4.1

[U-Boot] [PATCH 4/4] imx: mx6: Set Pfuze mode to decrease power number for DSM

[Fabio Estevam]

On Wed, Sep 10, 2014 at 6:08 AM, Ye.Li <B37916@freescale.com> wrote:

> +       value = 0xc;
> +       if (pmic_reg_write(p, 0x23, value)) {
> +               printf("Set SW1AB mode error!\n");
> +               return -1;
> +       }

-1 is not a proper return code here.

You could do this instead:

ret = pmic_reg_write(p, 0x23, value)
if (ret) {
        printf("Set SW1AB mode error: %d\n", ret);
        return ret;
}

Same applies for other parts.

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Stefano Babic]

Hi Ye,

On 10/09/2014 11:08, Ye.Li wrote:
> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
> 
> Signed-off-by: Ye.Li <B37916@freescale.com>
> ---

Slowly (sorry for that..) I am checking again all PMIC related patches
you sent last month. However, these patches do not fit very well in the
current development.

In the last U-Boot mini summit we get the decision to post new PMIC
drivers according to the Device Model rules. Przemyslaw is the new
custodian for PMICs, and he will take care of all related issues
regarding power management.

Please rethink your patches and post them again, not forgetting to add
Przemyslaw in CC.

Best regards,
Stefano Babic


>  board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>  include/configs/mx6slevk.h          |    7 ++++
>  2 files changed, 64 insertions(+), 0 deletions(-)
> 
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index fedd5c3..8b6a79c 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -21,6 +21,8 @@
>  #include <mmc.h>
>  #include <netdev.h>
>  #include <i2c.h>
> +#include <power/pmic.h>
> +#include <power/pfuze100_pmic.h>
>  
>  DECLARE_GLOBAL_DATA_PTR;
>  
> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>  
>  #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>  
> +#define I2C_PMIC	0
> +
>  /* I2C1 for PMIC */
>  struct i2c_pads_info i2c_pad_info0 = {
>  	.sda = {
> @@ -191,6 +195,59 @@ int board_init(void)
>  	return 0;
>  }
>  
> +static int pfuze_init(void)
> +{
> +	struct pmic *p;
> +	int ret;
> +	unsigned int reg;
> +
> +	ret = power_pfuze100_init(I2C_PMIC);
> +	if (ret)
> +		return ret;
> +
> +	p = pmic_get("PFUZE100");
> +	ret = pmic_probe(p);
> +	if (ret)
> +		return ret;
> +
> +	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
> +	printf("PMIC:  PFUZE%s ID=0x%02x\n",
> +		((reg & 0xf) == 0) ? "100" : "200", reg);
> +
> +	/* Set SW1AB stanby volage to 0.975V */
> +	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
> +	reg &= ~0x3f;
> +	reg |= 0x1b;
> +	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
> +
> +	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
> +	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
> +	reg &= ~0xc0;
> +	reg |= 0x40;
> +	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
> +
> +	/* Set SW1C standby voltage to 0.975V */
> +	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
> +	reg &= ~0x3f;
> +	reg |= 0x1b;
> +	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
> +
> +	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
> +	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
> +	reg &= ~0xc0;
> +	reg |= 0x40;
> +	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
> +
> +	return 0;
> +}
> +
> +int board_late_init(void)
> +{
> +	pfuze_init();
> +
> +	return 0;
> +}
> +
>  u32 get_board_rev(void)
>  {
>  	return get_cpu_rev();
> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
> index bf5066f..09d0896 100644
> --- a/include/configs/mx6slevk.h
> +++ b/include/configs/mx6slevk.h
> @@ -30,6 +30,7 @@
>  #define CONFIG_SYS_MALLOC_LEN		(3 * SZ_1M)
>  
>  #define CONFIG_BOARD_EARLY_INIT_F
> +#define CONFIG_BOARD_LATE_INIT
>  #define CONFIG_MXC_GPIO
>  
>  #define CONFIG_MXC_UART
> @@ -66,6 +67,12 @@
>  #define CONFIG_SYS_I2C_MXC
>  #define CONFIG_SYS_I2C_SPEED		  100000
>  
> +/* PMIC */
> +#define CONFIG_POWER
> +#define CONFIG_POWER_I2C
> +#define CONFIG_POWER_PFUZE100
> +#define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08
> +
>  /* allow to overwrite serial and ethaddr */
>  #define CONFIG_ENV_OVERWRITE
>  #define CONFIG_CONS_INDEX		1
> 


-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Li Ye-B37916]

Hi Przemyslaw,


On 10/30/2014 6:36 PM, Stefano Babic wrote:
> Hi Ye,
>
> On 10/09/2014 11:08, Ye.Li wrote:
>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>
>> Signed-off-by: Ye.Li <B37916@freescale.com>
>> ---
> Slowly (sorry for that..) I am checking again all PMIC related patches
> you sent last month. However, these patches do not fit very well in the
> current development.
>
> In the last U-Boot mini summit we get the decision to post new PMIC
> drivers according to the Device Model rules. Przemyslaw is the new
> custodian for PMICs, and he will take care of all related issues
> regarding power management.

Can you share me more information about the new PMIC drivers development that Stefano mentioned above.
1. Have you completed the APIs define for new PMIC drivers?  If yes, where I can get them.
2. When will the new PMIC drivers deliver?
3. Will the PMIC devices already supported in current release stay supported by new PMIC drivers?

Best regards,
Ye Li
> Please rethink your patches and post them again, not forgetting to add
> Przemyslaw in CC.
>
> Best regards,
> Stefano Babic
>
>>  board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>>  include/configs/mx6slevk.h          |    7 ++++
>>  2 files changed, 64 insertions(+), 0 deletions(-)
>>
>> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
>> index fedd5c3..8b6a79c 100644
>> --- a/board/freescale/mx6slevk/mx6slevk.c
>> +++ b/board/freescale/mx6slevk/mx6slevk.c
>> @@ -21,6 +21,8 @@
>>  #include <mmc.h>
>>  #include <netdev.h>
>>  #include <i2c.h>
>> +#include <power/pmic.h>
>> +#include <power/pfuze100_pmic.h>
>>  
>>  DECLARE_GLOBAL_DATA_PTR;
>>  
>> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>>  
>>  #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>>  
>> +#define I2C_PMIC	0
>> +
>>  /* I2C1 for PMIC */
>>  struct i2c_pads_info i2c_pad_info0 = {
>>  	.sda = {
>> @@ -191,6 +195,59 @@ int board_init(void)
>>  	return 0;
>>  }
>>  
>> +static int pfuze_init(void)
>> +{
>> +	struct pmic *p;
>> +	int ret;
>> +	unsigned int reg;
>> +
>> +	ret = power_pfuze100_init(I2C_PMIC);
>> +	if (ret)
>> +		return ret;
>> +
>> +	p = pmic_get("PFUZE100");
>> +	ret = pmic_probe(p);
>> +	if (ret)
>> +		return ret;
>> +
>> +	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>> +	printf("PMIC:  PFUZE%s ID=0x%02x\n",
>> +		((reg & 0xf) == 0) ? "100" : "200", reg);
>> +
>> +	/* Set SW1AB stanby volage to 0.975V */
>> +	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>> +	reg &= ~0x3f;
>> +	reg |= 0x1b;
>> +	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
>> +
>> +	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
>> +	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
>> +	reg &= ~0xc0;
>> +	reg |= 0x40;
>> +	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
>> +
>> +	/* Set SW1C standby voltage to 0.975V */
>> +	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
>> +	reg &= ~0x3f;
>> +	reg |= 0x1b;
>> +	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
>> +
>> +	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
>> +	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
>> +	reg &= ~0xc0;
>> +	reg |= 0x40;
>> +	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
>> +
>> +	return 0;
>> +}
>> +
>> +int board_late_init(void)
>> +{
>> +	pfuze_init();
>> +
>> +	return 0;
>> +}
>> +
>>  u32 get_board_rev(void)
>>  {
>>  	return get_cpu_rev();
>> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
>> index bf5066f..09d0896 100644
>> --- a/include/configs/mx6slevk.h
>> +++ b/include/configs/mx6slevk.h
>> @@ -30,6 +30,7 @@
>>  #define CONFIG_SYS_MALLOC_LEN		(3 * SZ_1M)
>>  
>>  #define CONFIG_BOARD_EARLY_INIT_F
>> +#define CONFIG_BOARD_LATE_INIT
>>  #define CONFIG_MXC_GPIO
>>  
>>  #define CONFIG_MXC_UART
>> @@ -66,6 +67,12 @@
>>  #define CONFIG_SYS_I2C_MXC
>>  #define CONFIG_SYS_I2C_SPEED		  100000
>>  
>> +/* PMIC */
>> +#define CONFIG_POWER
>> +#define CONFIG_POWER_I2C
>> +#define CONFIG_POWER_PFUZE100
>> +#define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08
>> +
>>  /* allow to overwrite serial and ethaddr */
>>  #define CONFIG_ENV_OVERWRITE
>>  #define CONFIG_CONS_INDEX		1
>>
>

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Li Ye-B37916]

Hi Przemyslaw,

On 11/4/2014 5:24 PM, Li Ye-B37916 wrote:
> Hi Przemyslaw,
>
>
> On 10/30/2014 6:36 PM, Stefano Babic wrote:
>> Hi Ye,
>>
>> On 10/09/2014 11:08, Ye.Li wrote:
>>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>>
>>> Signed-off-by: Ye.Li <B37916@freescale.com>
>>> ---
>> Slowly (sorry for that..) I am checking again all PMIC related patches
>> you sent last month. However, these patches do not fit very well in the
>> current development.
>>
>> In the last U-Boot mini summit we get the decision to post new PMIC
>> drivers according to the Device Model rules. Przemyslaw is the new
>> custodian for PMICs, and he will take care of all related issues
>> regarding power management.
> Can you share me more information about the new PMIC drivers development that Stefano mentioned above.
> 1. Have you completed the APIs define for new PMIC drivers?  If yes, where I can get them.
> 2. When will the new PMIC drivers deliver?
> 3. Will the PMIC devices already supported in current release stay supported by new PMIC drivers?
>
> Best regards,
> Ye Li
>> Please rethink your patches and post them again, not forgetting to add
>> Przemyslaw in CC.
>>
>> Best regards,
>> Stefano Babic
>>
>>>  board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>>>  include/configs/mx6slevk.h          |    7 ++++
>>>  2 files changed, 64 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
>>> index fedd5c3..8b6a79c 100644
>>> --- a/board/freescale/mx6slevk/mx6slevk.c
>>> +++ b/board/freescale/mx6slevk/mx6slevk.c
>>> @@ -21,6 +21,8 @@
>>>  #include <mmc.h>
>>>  #include <netdev.h>
>>>  #include <i2c.h>
>>> +#include <power/pmic.h>
>>> +#include <power/pfuze100_pmic.h>
>>>  
>>>  DECLARE_GLOBAL_DATA_PTR;
>>>  
>>> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>>>  
>>>  #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>>>  
>>> +#define I2C_PMIC	0
>>> +
>>>  /* I2C1 for PMIC */
>>>  struct i2c_pads_info i2c_pad_info0 = {
>>>  	.sda = {
>>> @@ -191,6 +195,59 @@ int board_init(void)
>>>  	return 0;
>>>  }
>>>  
>>> +static int pfuze_init(void)
>>> +{
>>> +	struct pmic *p;
>>> +	int ret;
>>> +	unsigned int reg;
>>> +
>>> +	ret = power_pfuze100_init(I2C_PMIC);
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	p = pmic_get("PFUZE100");
>>> +	ret = pmic_probe(p);
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>>> +	printf("PMIC:  PFUZE%s ID=0x%02x\n",
>>> +		((reg & 0xf) == 0) ? "100" : "200", reg);
>>> +
>>> +	/* Set SW1AB stanby volage to 0.975V */
>>> +	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>>> +	reg &= ~0x3f;
>>> +	reg |= 0x1b;
>>> +	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
>>> +
>>> +	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
>>> +	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
>>> +	reg &= ~0xc0;
>>> +	reg |= 0x40;
>>> +	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
>>> +
>>> +	/* Set SW1C standby voltage to 0.975V */
>>> +	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
>>> +	reg &= ~0x3f;
>>> +	reg |= 0x1b;
>>> +	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
>>> +
>>> +	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
>>> +	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
>>> +	reg &= ~0xc0;
>>> +	reg |= 0x40;
>>> +	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
>>> +
>>> +	return 0;
>>> +}
>>> +
>>> +int board_late_init(void)
>>> +{
>>> +	pfuze_init();
>>> +
>>> +	return 0;
>>> +}
>>> +
>>>  u32 get_board_rev(void)
>>>  {
>>>  	return get_cpu_rev();
>>> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
>>> index bf5066f..09d0896 100644
>>> --- a/include/configs/mx6slevk.h
>>> +++ b/include/configs/mx6slevk.h
>>> @@ -30,6 +30,7 @@
>>>  #define CONFIG_SYS_MALLOC_LEN		(3 * SZ_1M)
>>>  
>>>  #define CONFIG_BOARD_EARLY_INIT_F
>>> +#define CONFIG_BOARD_LATE_INIT
>>>  #define CONFIG_MXC_GPIO
>>>  
>>>  #define CONFIG_MXC_UART
>>> @@ -66,6 +67,12 @@
>>>  #define CONFIG_SYS_I2C_MXC
>>>  #define CONFIG_SYS_I2C_SPEED		  100000
>>>  
>>> +/* PMIC */
>>> +#define CONFIG_POWER
>>> +#define CONFIG_POWER_I2C
>>> +#define CONFIG_POWER_PFUZE100
>>> +#define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08
>>> +
>>>  /* allow to overwrite serial and ethaddr */
>>>  #define CONFIG_ENV_OVERWRITE
>>>  #define CONFIG_CONS_INDEX		1
>>>

Please help to answer my questions in the emails thread.  A incorrect email address was given, so I resend the email now.

Best regards,
Ye Li

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Przemyslaw Marczak]

Hello Ye Li,

On 11/04/2014 10:37 AM, Li Ye-B37916 wrote:
>
> Hi Przemyslaw,
>
> On 11/4/2014 5:24 PM, Li Ye-B37916 wrote:
>> Hi Przemyslaw,
>>
>>
>> On 10/30/2014 6:36 PM, Stefano Babic wrote:
>>> Hi Ye,
>>>
>>> On 10/09/2014 11:08, Ye.Li wrote:
>>>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>>>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>>>
>>>> Signed-off-by: Ye.Li <B37916@freescale.com>
>>>> ---
>>> Slowly (sorry for that..) I am checking again all PMIC related patches
>>> you sent last month. However, these patches do not fit very well in the
>>> current development.
>>>
>>> In the last U-Boot mini summit we get the decision to post new PMIC
>>> drivers according to the Device Model rules. Przemyslaw is the new
>>> custodian for PMICs, and he will take care of all related issues
>>> regarding power management.
>> Can you share me more information about the new PMIC drivers development that Stefano mentioned above.
>> 1. Have you completed the APIs define for new PMIC drivers?  If yes, where I can get them.
>> 2. When will the new PMIC drivers deliver?
>> 3. Will the PMIC devices already supported in current release stay supported by new PMIC drivers?
>>

The work on new PMIC framework was temporary on hold.
Now I'm working on it, but the basic functionality is actually done.
The first version you can check here:
https://github.com/bobenstein/u-boot.git
I need to make some rework, since the i2c is going to support the driver 
model.

I can now focus on this work. And this will be merged through u-boot-dm 
- since i2c support is added.

The plan is simple:
1) Add new drivers to the present PMIC framework - before merge the new one.
2) Add new PMIC framework as a separated piece of code.
3) Migrate old drivers and boards to the new framework.
4) Remove the old framework without any conflicts.

So it's not a problem if you want add this driver, we add this to the 
current framework - the migration should be simple and will not cause 
conflicts.

If you are interested in the new PMIC framework design, please read the 
doc file added by the patches from the link above.

You can implement just one class(UCLASS_PMIC), and if you need user 
friendly interface it is welcome to implement also UCLASS_PMIC_REGULATOR.

Please follow the list, maybe I will send the patches at the end of this 
week.

... [ snip ] ...


Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Przemyslaw Marczak]

Hello Ye Li,

On 09/10/2014 11:08 AM, Ye.Li wrote:
> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>
> Signed-off-by: Ye.Li <B37916@freescale.com>
> ---
>   board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>   include/configs/mx6slevk.h          |    7 ++++
>   2 files changed, 64 insertions(+), 0 deletions(-)
>
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index fedd5c3..8b6a79c 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -21,6 +21,8 @@
>   #include <mmc.h>
>   #include <netdev.h>
>   #include <i2c.h>
> +#include <power/pmic.h>
> +#include <power/pfuze100_pmic.h>
>
>   DECLARE_GLOBAL_DATA_PTR;
>
> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>
>   #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>
> +#define I2C_PMIC	0
> +
>   /* I2C1 for PMIC */
>   struct i2c_pads_info i2c_pad_info0 = {
>   	.sda = {
> @@ -191,6 +195,59 @@ int board_init(void)
>   	return 0;
>   }
>
> +static int pfuze_init(void)
> +{
> +	struct pmic *p;
> +	int ret;
> +	unsigned int reg;
> +
> +	ret = power_pfuze100_init(I2C_PMIC);
> +	if (ret)
> +		return ret;
> +
> +	p = pmic_get("PFUZE100");
> +	ret = pmic_probe(p);
> +	if (ret)
> +		return ret;
> +
> +	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
> +	printf("PMIC:  PFUZE%s ID=0x%02x\n",
> +		((reg & 0xf) == 0) ? "100" : "200", reg);
> +
> +	/* Set SW1AB stanby volage to 0.975V */
> +	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
> +	reg &= ~0x3f;
> +	reg |= 0x1b;
> +	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
> +
> +	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
> +	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
> +	reg &= ~0xc0;
> +	reg |= 0x40;
> +	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
> +
> +	/* Set SW1C standby voltage to 0.975V */
> +	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
> +	reg &= ~0x3f;
> +	reg |= 0x1b;
> +	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
> +
> +	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
> +	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
> +	reg &= ~0xc0;
> +	reg |= 0x40;
> +	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
> +
> +	return 0;
> +}
> +
> +int board_late_init(void)
> +{
> +	pfuze_init();
> +
> +	return 0;
> +}

Why not use power_init_board()?
It's dedicated and called at common/board_r.c.

> +
>   u32 get_board_rev(void)
>   {
>   	return get_cpu_rev();
> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
> index bf5066f..09d0896 100644
> --- a/include/configs/mx6slevk.h
> +++ b/include/configs/mx6slevk.h
> @@ -30,6 +30,7 @@
>   #define CONFIG_SYS_MALLOC_LEN		(3 * SZ_1M)
>
>   #define CONFIG_BOARD_EARLY_INIT_F
> +#define CONFIG_BOARD_LATE_INIT
>   #define CONFIG_MXC_GPIO
>
>   #define CONFIG_MXC_UART
> @@ -66,6 +67,12 @@
>   #define CONFIG_SYS_I2C_MXC
>   #define CONFIG_SYS_I2C_SPEED		  100000
>
> +/* PMIC */
> +#define CONFIG_POWER
> +#define CONFIG_POWER_I2C
> +#define CONFIG_POWER_PFUZE100
> +#define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08

I assume that the I2C addr is const, if yes then it should be moved to 
the PFUZE100 header.

> +
>   /* allow to overwrite serial and ethaddr */
>   #define CONFIG_ENV_OVERWRITE
>   #define CONFIG_CONS_INDEX		1
>

Thank you,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com

[U-Boot] [PATCH 4/4] imx: mx6: Set Pfuze mode to decrease power number for DSM

[Przemyslaw Marczak]

Hello Ye Li,

On 09/10/2014 11:08 AM, Ye.Li wrote:
> Set all switches APS mode in normal and PFM mode in standby. So when
> mx6 entering DSM mode, the power number can be decreased. There is
> no impact for mx6 in run mode.
>
> Changes for boards:
> -mx6 sabreauto
> -mx6 sabresd
> -mx6slevk
> -mx6sxsabresd
>
> Signed-off-by: Ye.Li <B37916@freescale.com>
> ---
>   board/freescale/mx6qsabreauto/mx6qsabreauto.c |   36 +++++++++++++++++++++++++
>   board/freescale/mx6sabresd/mx6sabresd.c       |   36 +++++++++++++++++++++++++
>   board/freescale/mx6slevk/mx6slevk.c           |   36 +++++++++++++++++++++++++
>   board/freescale/mx6sxsabresd/mx6sxsabresd.c   |   36 +++++++++++++++++++++++++
>   4 files changed, 144 insertions(+), 0 deletions(-)
>
> diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> index 76b024b..9e79915 100644
> --- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> +++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
> @@ -263,6 +263,37 @@ int board_init(void)
>   	return 0;
>   }
>
> +/* set all switches APS in normal and PFM mode in standby */

I think that the "chip" is quite misleading.
Just use chipid and check the real value instead of using it as bool.
And the PF100 DEVICEID should be defined in pf100 header.

> +static int pfuze_setup_mode(struct pmic *p, int chip)
> +{
> +	unsigned char offset, i, switch_num, value;
> +
> +	if (!chip) {
> +		/* pfuze100 */
> +		switch_num = 6;
> +		offset = 0x31;
> +	} else {
> +		/* pfuze200 */
> +		switch_num = 4;
> +		offset = 0x38;
> +	}
> +
> +	value = 0xc;

If you change "magic" values (e.g. 0xc) with proper defines in pmic 
header, then it could be reused in the future and the code will be more 
readable.

> +	if (pmic_reg_write(p, 0x23, value)) {
> +		printf("Set SW1AB mode error!\n");
> +		return -1;
> +	}
> +
> +	for (i = 0; i < switch_num - 1; i++) {
> +		if (pmic_reg_write(p, offset + i * 7, value)) {
> +			printf("Set switch%x mode error!\n", offset);
> +			return -1;
> +		}
> +	}
> +
> +	return 0;
> +}

The function above is duplicated few times in each board code.
Why not make it common and just one?

> +
>   static int pfuze_init(void)
>   {
>   	struct pmic *p;
> @@ -281,6 +312,11 @@ static int pfuze_init(void)
>   	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>   	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
>
> +	if (pfuze_setup_mode(p, (reg & 0xf))) {
> +		printf("setup pfuze mode error!\n");
> +		return -1;
> +	}
> +
>   	/* Set SW1AB stanby volage to 0.975V */
>   	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>   	reg &= ~0x3f;
> diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
> index 72d6562..810fe13 100644
> --- a/board/freescale/mx6sabresd/mx6sabresd.c
> +++ b/board/freescale/mx6sabresd/mx6sabresd.c
> @@ -456,6 +456,37 @@ int board_init(void)
>   	return 0;
>   }
>
> +/* set all switches APS in normal and PFM mode in standby */
> +static int pfuze_setup_mode(struct pmic *p, int chip)
> +{
> +	unsigned char offset, i, switch_num, value;
> +
> +	if (!chip) {
> +		/* pfuze100 */
> +		switch_num = 6;
> +		offset = 0x31;
> +	} else {
> +		/* pfuze200 */
> +		switch_num = 4;
> +		offset = 0x38;
> +	}
> +
> +	value = 0xc;
> +	if (pmic_reg_write(p, 0x23, value)) {
> +		printf("Set SW1AB mode error!\n");
> +		return -1;
> +	}
> +
> +	for (i = 0; i < switch_num - 1; i++) {
> +		if (pmic_reg_write(p, offset + i * 7, value)) {
> +			printf("Set switch%x mode error!\n", offset);
> +			return -1;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>   static int pfuze_init(void)
>   {
>   	struct pmic *p;
> @@ -475,6 +506,11 @@ static int pfuze_init(void)
>   	printf("PMIC:  PFUZE%s ID=0x%02x\n",
>   		((reg & 0xf) == 0) ? "100" : "200", reg);
>
> +	if (pfuze_setup_mode(p, (reg & 0xf))) {
> +		printf("setup pfuze mode error!\n");
> +		return -1;
> +	}
> +
>   	/* Increase VGEN3 from 2.5 to 2.8V */
>   	pmic_reg_read(p, PFUZE100_VGEN3VOL, &reg);
>   	reg &= ~0xf;
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index 8b6a79c..fe5e37d 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -195,6 +195,37 @@ int board_init(void)
>   	return 0;
>   }
>
> +/* set all switches APS in normal and PFM mode in standby */
> +static int pfuze_setup_mode(struct pmic *p, int chip)
> +{
> +	unsigned char offset, i, switch_num, value;
> +
> +	if (!chip) {
> +		/* pfuze100 */
> +		switch_num = 6;
> +		offset = 0x31;
> +	} else {
> +		/* pfuze200 */
> +		switch_num = 4;
> +		offset = 0x38;
> +	}
> +
> +	value = 0xc;
> +	if (pmic_reg_write(p, 0x23, value)) {
> +		printf("Set SW1AB mode error!\n");
> +		return -1;
> +	}
> +
> +	for (i = 0; i < switch_num - 1; i++) {
> +		if (pmic_reg_write(p, offset + i * 7, value)) {
> +			printf("Set switch%x mode error!\n", offset);
> +			return -1;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>   static int pfuze_init(void)
>   {
>   	struct pmic *p;
> @@ -214,6 +245,11 @@ static int pfuze_init(void)
>   	printf("PMIC:  PFUZE%s ID=0x%02x\n",
>   		((reg & 0xf) == 0) ? "100" : "200", reg);
>
> +	if (pfuze_setup_mode(p, (reg & 0xf))) {
> +		printf("setup pfuze mode error!\n");
> +		return -1;
> +	}
> +
>   	/* Set SW1AB stanby volage to 0.975V */
>   	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>   	reg &= ~0x3f;
> diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
> index 80d2d99..d6a33cd 100644
> --- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
> +++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
> @@ -170,6 +170,37 @@ struct i2c_pads_info i2c_pad_info1 = {
>   	},
>   };
>
> +/* set all switches APS in normal and PFM mode in standby */
> +static int pfuze_setup_mode(struct pmic *p, int chip)
> +{
> +	unsigned char offset, i, switch_num, value;
> +
> +	if (!chip) {
> +		/* pfuze100 */
> +		switch_num = 6;
> +		offset = 0x31;
> +	} else {
> +		/* pfuze200 */
> +		switch_num = 4;
> +		offset = 0x38;
> +	}
> +
> +	value = 0xc;
> +	if (pmic_reg_write(p, 0x23, value)) {
> +		printf("Set SW1AB mode error!\n");
> +		return -1;
> +	}
> +
> +	for (i = 0; i < switch_num - 1; i++) {
> +		if (pmic_reg_write(p, offset + i * 7, value)) {
> +			printf("Set switch%x mode error!\n", offset);
> +			return -1;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>   static int pfuze_init(void)
>   {
>   	struct pmic *p;
> @@ -188,6 +219,11 @@ static int pfuze_init(void)
>   	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>   	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
>
> +	if (pfuze_setup_mode(p, (reg & 0xf))) {
> +		printf("setup pfuze mode error!\n");
> +		return -1;
> +	}
> +
>   	/* Set SW1AB standby voltage to 0.975V */
>   	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>   	reg &= ~0x3f;
>

And as Fabio wrote, please return real error values or use errno instead 
of "-1".

Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Li Ye-B37916]

Hi Przemyslaw,

On 11/4/2014 10:09 PM, Przemyslaw Marczak wrote:
> Hello Ye Li,
>
> On 11/04/2014 10:37 AM, Li Ye-B37916 wrote:
>>
>> Hi Przemyslaw,
>>
>> On 11/4/2014 5:24 PM, Li Ye-B37916 wrote:
>>> Hi Przemyslaw,
>>>
>>>
>>> On 10/30/2014 6:36 PM, Stefano Babic wrote:
>>>> Hi Ye,
>>>>
>>>> On 10/09/2014 11:08, Ye.Li wrote:
>>>>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>>>>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>>>>
>>>>> Signed-off-by: Ye.Li <B37916@freescale.com>
>>>>> ---
>>>> Slowly (sorry for that..) I am checking again all PMIC related patches
>>>> you sent last month. However, these patches do not fit very well in the
>>>> current development.
>>>>
>>>> In the last U-Boot mini summit we get the decision to post new PMIC
>>>> drivers according to the Device Model rules. Przemyslaw is the new
>>>> custodian for PMICs, and he will take care of all related issues
>>>> regarding power management.
>>> Can you share me more information about the new PMIC drivers development that Stefano mentioned above.
>>> 1. Have you completed the APIs define for new PMIC drivers?  If yes, where I can get them.
>>> 2. When will the new PMIC drivers deliver?
>>> 3. Will the PMIC devices already supported in current release stay supported by new PMIC drivers?
>>>
>
> The work on new PMIC framework was temporary on hold.
> Now I'm working on it, but the basic functionality is actually done.
> The first version you can check here:
> https://github.com/bobenstein/u-boot.git
> I need to make some rework, since the i2c is going to support the driver model.
>
> I can now focus on this work. And this will be merged through u-boot-dm - since i2c support is added.
>
> The plan is simple:
> 1) Add new drivers to the present PMIC framework - before merge the new one.
> 2) Add new PMIC framework as a separated piece of code.
> 3) Migrate old drivers and boards to the new framework.
> 4) Remove the old framework without any conflicts.
>
> So it's not a problem if you want add this driver, we add this to the current framework - the migration should be simple and will not cause conflicts.
>
> If you are interested in the new PMIC framework design, please read the doc file added by the patches from the link above.
>
> You can implement just one class(UCLASS_PMIC), and if you need user friendly interface it is welcome to implement also UCLASS_PMIC_REGULATOR.
>
> Please follow the list, maybe I will send the patches at the end of this week.
>
> ... [ snip ] ...
>
>
> Best regards,

My patches don't add any new PMIC driver. The PFUZE100 driver already exists in present u-boot.  We just call the driver to apply new settings for PFUZE100.
According to your plan, can you help to figure out which phase the PMIC development is at now?   I feel my patches won't conflict with your job before phase 3. 
If there is no conflict, I will continue the upstream.

Best regards,
Ye Li

.

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Li Ye-B37916]

Hi Przemyslaw,

On 11/4/2014 11:56 PM, Przemyslaw Marczak wrote:
> Hello Ye Li,
>
> On 09/10/2014 11:08 AM, Ye.Li wrote:
>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>
>> Signed-off-by: Ye.Li <B37916@freescale.com>
>> ---
>>   board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>>   include/configs/mx6slevk.h          |    7 ++++
>>   2 files changed, 64 insertions(+), 0 deletions(-)
>>
>> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
>> index fedd5c3..8b6a79c 100644
>> --- a/board/freescale/mx6slevk/mx6slevk.c
>> +++ b/board/freescale/mx6slevk/mx6slevk.c
>> @@ -21,6 +21,8 @@
>>   #include <mmc.h>
>>   #include <netdev.h>
>>   #include <i2c.h>
>> +#include <power/pmic.h>
>> +#include <power/pfuze100_pmic.h>
>>
>>   DECLARE_GLOBAL_DATA_PTR;
>>
>> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>>
>>   #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>>
>> +#define I2C_PMIC    0
>> +
>>   /* I2C1 for PMIC */
>>   struct i2c_pads_info i2c_pad_info0 = {
>>       .sda = {
>> @@ -191,6 +195,59 @@ int board_init(void)
>>       return 0;
>>   }
>>
>> +static int pfuze_init(void)
>> +{
>> +    struct pmic *p;
>> +    int ret;
>> +    unsigned int reg;
>> +
>> +    ret = power_pfuze100_init(I2C_PMIC);
>> +    if (ret)
>> +        return ret;
>> +
>> +    p = pmic_get("PFUZE100");
>> +    ret = pmic_probe(p);
>> +    if (ret)
>> +        return ret;
>> +
>> +    pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>> +    printf("PMIC:  PFUZE%s ID=0x%02x\n",
>> +        ((reg & 0xf) == 0) ? "100" : "200", reg);
>> +
>> +    /* Set SW1AB stanby volage to 0.975V */
>> +    pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>> +    reg &= ~0x3f;
>> +    reg |= 0x1b;
>> +    pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
>> +
>> +    /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
>> +    pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
>> +    reg &= ~0xc0;
>> +    reg |= 0x40;
>> +    pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
>> +
>> +    /* Set SW1C standby voltage to 0.975V */
>> +    pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
>> +    reg &= ~0x3f;
>> +    reg |= 0x1b;
>> +    pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
>> +
>> +    /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
>> +    pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
>> +    reg &= ~0xc0;
>> +    reg |= 0x40;
>> +    pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
>> +
>> +    return 0;
>> +}
>> +
>> +int board_late_init(void)
>> +{
>> +    pfuze_init();
>> +
>> +    return 0;
>> +}
>
> Why not use power_init_board()?
> It's dedicated and called at common/board_r.c.
>
Good suggestion, will change to use the power_init_board in v2.

>> +
>>   u32 get_board_rev(void)
>>   {
>>       return get_cpu_rev();
>> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
>> index bf5066f..09d0896 100644
>> --- a/include/configs/mx6slevk.h
>> +++ b/include/configs/mx6slevk.h
>> @@ -30,6 +30,7 @@
>>   #define CONFIG_SYS_MALLOC_LEN        (3 * SZ_1M)
>>
>>   #define CONFIG_BOARD_EARLY_INIT_F
>> +#define CONFIG_BOARD_LATE_INIT
>>   #define CONFIG_MXC_GPIO
>>
>>   #define CONFIG_MXC_UART
>> @@ -66,6 +67,12 @@
>>   #define CONFIG_SYS_I2C_MXC
>>   #define CONFIG_SYS_I2C_SPEED          100000
>>
>> +/* PMIC */
>> +#define CONFIG_POWER
>> +#define CONFIG_POWER_I2C
>> +#define CONFIG_POWER_PFUZE100
>> +#define CONFIG_POWER_PFUZE100_I2C_ADDR    0x08
>
> I assume that the I2C addr is const, if yes then it should be moved to the PFUZE100 header.
>
It is not const. The default I2C address is 0x08.  But it can be programmed from 0x08 to 0x0F by setting
OTP_I2C_ADDR register.

>> +
>>   /* allow to overwrite serial and ethaddr */
>>   #define CONFIG_ENV_OVERWRITE
>>   #define CONFIG_CONS_INDEX        1
>>
>
> Thank you,

Best regards,
Ye Li

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Przemyslaw Marczak]

Hello Ye Li,

On 11/05/2014 09:28 AM, Li Ye-B37916 wrote:
> Hi Przemyslaw,
>
> On 11/4/2014 10:09 PM, Przemyslaw Marczak wrote:
>> Hello Ye Li,
>>
>> On 11/04/2014 10:37 AM, Li Ye-B37916 wrote:
>>>
>>> Hi Przemyslaw,
>>>
>>> On 11/4/2014 5:24 PM, Li Ye-B37916 wrote:
>>>> Hi Przemyslaw,
>>>>
>>>>
>>>> On 10/30/2014 6:36 PM, Stefano Babic wrote:
>>>>> Hi Ye,
>>>>>
>>>>> On 10/09/2014 11:08, Ye.Li wrote:
>>>>>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>>>>>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>>>>>
>>>>>> Signed-off-by: Ye.Li <B37916@freescale.com>
>>>>>> ---
>>>>> Slowly (sorry for that..) I am checking again all PMIC related patches
>>>>> you sent last month. However, these patches do not fit very well in the
>>>>> current development.
>>>>>
>>>>> In the last U-Boot mini summit we get the decision to post new PMIC
>>>>> drivers according to the Device Model rules. Przemyslaw is the new
>>>>> custodian for PMICs, and he will take care of all related issues
>>>>> regarding power management.
>>>> Can you share me more information about the new PMIC drivers development that Stefano mentioned above.
>>>> 1. Have you completed the APIs define for new PMIC drivers?  If yes, where I can get them.
>>>> 2. When will the new PMIC drivers deliver?
>>>> 3. Will the PMIC devices already supported in current release stay supported by new PMIC drivers?
>>>>
>>
>> The work on new PMIC framework was temporary on hold.
>> Now I'm working on it, but the basic functionality is actually done.
>> The first version you can check here:
>> https://github.com/bobenstein/u-boot.git
>> I need to make some rework, since the i2c is going to support the driver model.
>>
>> I can now focus on this work. And this will be merged through u-boot-dm - since i2c support is added.
>>
>> The plan is simple:
>> 1) Add new drivers to the present PMIC framework - before merge the new one.
>> 2) Add new PMIC framework as a separated piece of code.
>> 3) Migrate old drivers and boards to the new framework.
>> 4) Remove the old framework without any conflicts.
>>
>> So it's not a problem if you want add this driver, we add this to the current framework - the migration should be simple and will not cause conflicts.
>>
>> If you are interested in the new PMIC framework design, please read the doc file added by the patches from the link above.
>>
>> You can implement just one class(UCLASS_PMIC), and if you need user friendly interface it is welcome to implement also UCLASS_PMIC_REGULATOR.
>>
>> Please follow the list, maybe I will send the patches at the end of this week.
>>
>> ... [ snip ] ...
>>
>>
>> Best regards,
>
> My patches don't add any new PMIC driver. The PFUZE100 driver already exists in present u-boot.  We just call the driver to apply new settings for PFUZE100.
> According to your plan, can you help to figure out which phase the PMIC development is at now?   I feel my patches won't conflict with your job before phase 3.
> If there is no conflict, I will continue the upstream.
>
> Best regards,
> Ye Li
>
> .
>

Ok, so the code from github link(also can be found on the list), adds 
API for two PMIC uclasses: PMIC and REGULATOR - both are implemented by
MAX77686 driver and enabled for Trats2 and Odroid boards.
It was RFC patchset, but is fully functional. It's hard to say when 
exactly I can send next version - it's not the only task.
There are no conflicts, so please continue your work.

Best Regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com

[U-Boot] [PATCH 4/4] imx: mx6: Set Pfuze mode to decrease power number for DSM

[Li Ye-B37916]

Hi Przemyslaw,

On 11/4/2014 11:57 PM, Przemyslaw Marczak wrote:
> Hello Ye Li,
>
> On 09/10/2014 11:08 AM, Ye.Li wrote:
>> Set all switches APS mode in normal and PFM mode in standby. So when
>> mx6 entering DSM mode, the power number can be decreased. There is
>> no impact for mx6 in run mode.
>>
>> Changes for boards:
>> -mx6 sabreauto
>> -mx6 sabresd
>> -mx6slevk
>> -mx6sxsabresd
>>
>> Signed-off-by: Ye.Li <B37916@freescale.com>
>> ---
>>   board/freescale/mx6qsabreauto/mx6qsabreauto.c |   36 +++++++++++++++++++++++++
>>   board/freescale/mx6sabresd/mx6sabresd.c       |   36 +++++++++++++++++++++++++
>>   board/freescale/mx6slevk/mx6slevk.c           |   36 +++++++++++++++++++++++++
>>   board/freescale/mx6sxsabresd/mx6sxsabresd.c   |   36 +++++++++++++++++++++++++
>>   4 files changed, 144 insertions(+), 0 deletions(-)
>>
>> diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
>> index 76b024b..9e79915 100644
>> --- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
>> +++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
>> @@ -263,6 +263,37 @@ int board_init(void)
>>       return 0;
>>   }
>>
>> +/* set all switches APS in normal and PFM mode in standby */
>
> I think that the "chip" is quite misleading.
> Just use chipid and check the real value instead of using it as bool.
> And the PF100 DEVICEID should be defined in pf100 header.
>
Accept. Will change it in next version.

>> +static int pfuze_setup_mode(struct pmic *p, int chip)
>> +{
>> +    unsigned char offset, i, switch_num, value;
>> +
>> +    if (!chip) {
>> +        /* pfuze100 */
>> +        switch_num = 6;
>> +        offset = 0x31;
>> +    } else {
>> +        /* pfuze200 */
>> +        switch_num = 4;
>> +        offset = 0x38;
>> +    }
>> +
>> +    value = 0xc;
>
> If you change "magic" values (e.g. 0xc) with proper defines in pmic header, then it could be reused in the future and the code will be more readable.
>
Ok.

>> +    if (pmic_reg_write(p, 0x23, value)) {
>> +        printf("Set SW1AB mode error!\n");
>> +        return -1;
>> +    }
>> +
>> +    for (i = 0; i < switch_num - 1; i++) {
>> +        if (pmic_reg_write(p, offset + i * 7, value)) {
>> +            printf("Set switch%x mode error!\n", offset);
>> +            return -1;
>> +        }
>> +    }
>> +
>> +    return 0;
>> +}
>
> The function above is duplicated few times in each board code.
> Why not make it common and just one?
>

I already have made it as a common function in v4. The patch you reviewed seems not the latest one.  I will address your other comments and send out v5.

>> +
>>   static int pfuze_init(void)
>>   {
>>       struct pmic *p;
>> @@ -281,6 +312,11 @@ static int pfuze_init(void)
>>       pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>>       printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
>>
>> +    if (pfuze_setup_mode(p, (reg & 0xf))) {
>> +        printf("setup pfuze mode error!\n");
>> +        return -1;
>> +    }
>> +
>>       /* Set SW1AB stanby volage to 0.975V */
>>       pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>>       reg &= ~0x3f;
>> diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
>> index 72d6562..810fe13 100644
>> --- a/board/freescale/mx6sabresd/mx6sabresd.c
>> +++ b/board/freescale/mx6sabresd/mx6sabresd.c
>> @@ -456,6 +456,37 @@ int board_init(void)
>>       return 0;
>>   }
>>
>> +/* set all switches APS in normal and PFM mode in standby */
>> +static int pfuze_setup_mode(struct pmic *p, int chip)
>> +{
>> +    unsigned char offset, i, switch_num, value;
>> +
>> +    if (!chip) {
>> +        /* pfuze100 */
>> +        switch_num = 6;
>> +        offset = 0x31;
>> +    } else {
>> +        /* pfuze200 */
>> +        switch_num = 4;
>> +        offset = 0x38;
>> +    }
>> +
>> +    value = 0xc;
>> +    if (pmic_reg_write(p, 0x23, value)) {
>> +        printf("Set SW1AB mode error!\n");
>> +        return -1;
>> +    }
>> +
>> +    for (i = 0; i < switch_num - 1; i++) {
>> +        if (pmic_reg_write(p, offset + i * 7, value)) {
>> +            printf("Set switch%x mode error!\n", offset);
>> +            return -1;
>> +        }
>> +    }
>> +
>> +    return 0;
>> +}
>> +
>>   static int pfuze_init(void)
>>   {
>>       struct pmic *p;
>> @@ -475,6 +506,11 @@ static int pfuze_init(void)
>>       printf("PMIC:  PFUZE%s ID=0x%02x\n",
>>           ((reg & 0xf) == 0) ? "100" : "200", reg);
>>
>> +    if (pfuze_setup_mode(p, (reg & 0xf))) {
>> +        printf("setup pfuze mode error!\n");
>> +        return -1;
>> +    }
>> +
>>       /* Increase VGEN3 from 2.5 to 2.8V */
>>       pmic_reg_read(p, PFUZE100_VGEN3VOL, &reg);
>>       reg &= ~0xf;
>> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
>> index 8b6a79c..fe5e37d 100644
>> --- a/board/freescale/mx6slevk/mx6slevk.c
>> +++ b/board/freescale/mx6slevk/mx6slevk.c
>> @@ -195,6 +195,37 @@ int board_init(void)
>>       return 0;
>>   }
>>
>> +/* set all switches APS in normal and PFM mode in standby */
>> +static int pfuze_setup_mode(struct pmic *p, int chip)
>> +{
>> +    unsigned char offset, i, switch_num, value;
>> +
>> +    if (!chip) {
>> +        /* pfuze100 */
>> +        switch_num = 6;
>> +        offset = 0x31;
>> +    } else {
>> +        /* pfuze200 */
>> +        switch_num = 4;
>> +        offset = 0x38;
>> +    }
>> +
>> +    value = 0xc;
>> +    if (pmic_reg_write(p, 0x23, value)) {
>> +        printf("Set SW1AB mode error!\n");
>> +        return -1;
>> +    }
>> +
>> +    for (i = 0; i < switch_num - 1; i++) {
>> +        if (pmic_reg_write(p, offset + i * 7, value)) {
>> +            printf("Set switch%x mode error!\n", offset);
>> +            return -1;
>> +        }
>> +    }
>> +
>> +    return 0;
>> +}
>> +
>>   static int pfuze_init(void)
>>   {
>>       struct pmic *p;
>> @@ -214,6 +245,11 @@ static int pfuze_init(void)
>>       printf("PMIC:  PFUZE%s ID=0x%02x\n",
>>           ((reg & 0xf) == 0) ? "100" : "200", reg);
>>
>> +    if (pfuze_setup_mode(p, (reg & 0xf))) {
>> +        printf("setup pfuze mode error!\n");
>> +        return -1;
>> +    }
>> +
>>       /* Set SW1AB stanby volage to 0.975V */
>>       pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>>       reg &= ~0x3f;
>> diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
>> index 80d2d99..d6a33cd 100644
>> --- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
>> +++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
>> @@ -170,6 +170,37 @@ struct i2c_pads_info i2c_pad_info1 = {
>>       },
>>   };
>>
>> +/* set all switches APS in normal and PFM mode in standby */
>> +static int pfuze_setup_mode(struct pmic *p, int chip)
>> +{
>> +    unsigned char offset, i, switch_num, value;
>> +
>> +    if (!chip) {
>> +        /* pfuze100 */
>> +        switch_num = 6;
>> +        offset = 0x31;
>> +    } else {
>> +        /* pfuze200 */
>> +        switch_num = 4;
>> +        offset = 0x38;
>> +    }
>> +
>> +    value = 0xc;
>> +    if (pmic_reg_write(p, 0x23, value)) {
>> +        printf("Set SW1AB mode error!\n");
>> +        return -1;
>> +    }
>> +
>> +    for (i = 0; i < switch_num - 1; i++) {
>> +        if (pmic_reg_write(p, offset + i * 7, value)) {
>> +            printf("Set switch%x mode error!\n", offset);
>> +            return -1;
>> +        }
>> +    }
>> +
>> +    return 0;
>> +}
>> +
>>   static int pfuze_init(void)
>>   {
>>       struct pmic *p;
>> @@ -188,6 +219,11 @@ static int pfuze_init(void)
>>       pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>>       printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
>>
>> +    if (pfuze_setup_mode(p, (reg & 0xf))) {
>> +        printf("setup pfuze mode error!\n");
>> +        return -1;
>> +    }
>> +
>>       /* Set SW1AB standby voltage to 0.975V */
>>       pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>>       reg &= ~0x3f;
>>
>
> And as Fabio wrote, please return real error values or use errno instead of "-1".
>
Have fixed it in v4 patch.

> Best regards,

Best regards,
Ye Li

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Przemyslaw Marczak]

Hello,

On 11/05/2014 09:33 AM, Li Ye-B37916 wrote:
> Hi Przemyslaw,
>
> On 11/4/2014 11:56 PM, Przemyslaw Marczak wrote:
>> Hello Ye Li,
>>
>> On 09/10/2014 11:08 AM, Ye.Li wrote:
>>> Initialize the Pfuze on I2C1 at board late init. The mx6slevk board
>>> has Pfuze100 or Pfuze200, print the chip type by parsing the ID.
>>>
>>> Signed-off-by: Ye.Li <B37916@freescale.com>
>>> ---
>>>    board/freescale/mx6slevk/mx6slevk.c |   57 +++++++++++++++++++++++++++++++++++
>>>    include/configs/mx6slevk.h          |    7 ++++
>>>    2 files changed, 64 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
>>> index fedd5c3..8b6a79c 100644
>>> --- a/board/freescale/mx6slevk/mx6slevk.c
>>> +++ b/board/freescale/mx6slevk/mx6slevk.c
>>> @@ -21,6 +21,8 @@
>>>    #include <mmc.h>
>>>    #include <netdev.h>
>>>    #include <i2c.h>
>>> +#include <power/pmic.h>
>>> +#include <power/pfuze100_pmic.h>
>>>
>>>    DECLARE_GLOBAL_DATA_PTR;
>>>
>>> @@ -48,6 +50,8 @@ DECLARE_GLOBAL_DATA_PTR;
>>>
>>>    #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
>>>
>>> +#define I2C_PMIC    0
>>> +
>>>    /* I2C1 for PMIC */
>>>    struct i2c_pads_info i2c_pad_info0 = {
>>>        .sda = {
>>> @@ -191,6 +195,59 @@ int board_init(void)
>>>        return 0;
>>>    }
>>>
>>> +static int pfuze_init(void)
>>> +{
>>> +    struct pmic *p;
>>> +    int ret;
>>> +    unsigned int reg;
>>> +
>>> +    ret = power_pfuze100_init(I2C_PMIC);
>>> +    if (ret)
>>> +        return ret;
>>> +
>>> +    p = pmic_get("PFUZE100");
>>> +    ret = pmic_probe(p);
>>> +    if (ret)
>>> +        return ret;
>>> +
>>> +    pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
>>> +    printf("PMIC:  PFUZE%s ID=0x%02x\n",
>>> +        ((reg & 0xf) == 0) ? "100" : "200", reg);
>>> +
>>> +    /* Set SW1AB stanby volage to 0.975V */
>>> +    pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
>>> +    reg &= ~0x3f;
>>> +    reg |= 0x1b;
>>> +    pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
>>> +
>>> +    /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
>>> +    pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
>>> +    reg &= ~0xc0;
>>> +    reg |= 0x40;
>>> +    pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
>>> +
>>> +    /* Set SW1C standby voltage to 0.975V */
>>> +    pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
>>> +    reg &= ~0x3f;
>>> +    reg |= 0x1b;
>>> +    pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
>>> +
>>> +    /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
>>> +    pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
>>> +    reg &= ~0xc0;
>>> +    reg |= 0x40;
>>> +    pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
>>> +
>>> +    return 0;
>>> +}
>>> +
>>> +int board_late_init(void)
>>> +{
>>> +    pfuze_init();
>>> +
>>> +    return 0;
>>> +}
>>
>> Why not use power_init_board()?
>> It's dedicated and called at common/board_r.c.
>>
> Good suggestion, will change to use the power_init_board in v2.
>

The power_init_board is called much more earlier, then please make sure 
that everything will work for you.

>>> +
>>>    u32 get_board_rev(void)
>>>    {
>>>        return get_cpu_rev();
>>> diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
>>> index bf5066f..09d0896 100644
>>> --- a/include/configs/mx6slevk.h
>>> +++ b/include/configs/mx6slevk.h
>>> @@ -30,6 +30,7 @@
>>>    #define CONFIG_SYS_MALLOC_LEN        (3 * SZ_1M)
>>>
>>>    #define CONFIG_BOARD_EARLY_INIT_F
>>> +#define CONFIG_BOARD_LATE_INIT
>>>    #define CONFIG_MXC_GPIO
>>>
>>>    #define CONFIG_MXC_UART
>>> @@ -66,6 +67,12 @@
>>>    #define CONFIG_SYS_I2C_MXC
>>>    #define CONFIG_SYS_I2C_SPEED          100000
>>>
>>> +/* PMIC */
>>> +#define CONFIG_POWER
>>> +#define CONFIG_POWER_I2C
>>> +#define CONFIG_POWER_PFUZE100
>>> +#define CONFIG_POWER_PFUZE100_I2C_ADDR    0x08
>>
>> I assume that the I2C addr is const, if yes then it should be moved to the PFUZE100 header.
>>
> It is not const. The default I2C address is 0x08.  But it can be programmed from 0x08 to 0x0F by setting
> OTP_I2C_ADDR register.
>

Yes, so the PMIC header is a good place for the default definitions. But 
I see that each board defines the same address for it. So leave it as it 
is.

>>> +
>>>    /* allow to overwrite serial and ethaddr */
>>>    #define CONFIG_ENV_OVERWRITE
>>>    #define CONFIG_CONS_INDEX        1
>>>
>>
>> Thank you,
>
> Best regards,
> Ye Li
>

Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com

[U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support

[Fabio Estevam]

Hi Ye Li,

On Wed, Nov 5, 2014 at 6:33 AM, Li Ye-B37916 <b37916@freescale.com> wrote:

>> Why not use power_init_board()?
>> It's dedicated and called at common/board_r.c.
>>
> Good suggestion, will change to use the power_init_board in v2.

Have you had a chance to send a v2 for this series?

I still don't see this patch applied.

Thanks