[PATCH 1/2] imx8mp_evk: Convert to DM_PMIC

[Fabio Estevam]

From: Fabio Estevam <festevam at denx.de>

Currently, the imx8mp_evk uses the non-DM code to initialize the PMIC.

Convert to DM_PMIC, which is the recommended way to access the PMIC.

While at it, fix multi-line comments style.

Signed-off-by: Fabio Estevam <festevam at denx.de>
---
 arch/arm/dts/imx8mp-evk-u-boot.dtsi | 18 ++++++++++-
 board/freescale/imx8mp_evk/spl.c    | 50 +++++++++++++++--------------
 configs/imx8mp_evk_defconfig        | 12 +++----
 3 files changed, 47 insertions(+), 33 deletions(-)

diff --git a/arch/arm/dts/imx8mp-evk-u-boot.dtsi b/arch/arm/dts/imx8mp-evk-u-boot.dtsi
index 9ed62f1bb02d..0bf489b46248 100644
--- a/arch/arm/dts/imx8mp-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mp-evk-u-boot.dtsi
@@ -13,6 +13,22 @@
 	};
 };
 
+&pinctrl_i2c1 {
+	bootph-all;
+};
+
+&pinctrl_pmic {
+	bootph-all;
+};
+
+&{/soc at 0/bus at 30800000/i2c at 30a20000/pmic at 25} {
+	bootph-all;
+};
+
+&{/soc at 0/bus at 30800000/i2c at 30a20000/pmic at 25/regulators} {
+	bootph-all;
+};
+
 &reg_usdhc2_vmmc {
 	u-boot,off-on-delay-us = <20000>;
 };
@@ -66,7 +82,7 @@
 };
 
 &i2c1 {
-	bootph-pre-ram;
+	bootph-all;
 };
 
 &i2c2 {
diff --git a/board/freescale/imx8mp_evk/spl.c b/board/freescale/imx8mp_evk/spl.c
index 246826a0d482..9dd2cbc799c3 100644
--- a/board/freescale/imx8mp_evk/spl.c
+++ b/board/freescale/imx8mp_evk/spl.c
@@ -67,40 +67,44 @@ struct i2c_pads_info i2c_pad_info1 = {
 	},
 };
 
-#if CONFIG_IS_ENABLED(POWER_LEGACY)
-#define I2C_PMIC	0
+#if CONFIG_IS_ENABLED(DM_PMIC_PCA9450)
 int power_init_board(void)
 {
-	struct pmic *p;
+	struct udevice *dev;
 	int ret;
 
-	ret = power_pca9450_init(I2C_PMIC, 0x25);
-	if (ret)
-		printf("power init failed");
-	p = pmic_get("PCA9450");
-	pmic_probe(p);
+	ret = pmic_get("pmic at 25", &dev);
+	if (ret == -ENODEV) {
+		puts("No pmic at 25\n");
+		return 0;
+	}
+	if (ret < 0)
+		return ret;
 
 	/* BUCKxOUT_DVS0/1 control BUCK123 output */
-	pmic_reg_write(p, PCA9450_BUCK123_DVS, 0x29);
+	pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
 
 	/*
-	 * increase VDD_SOC to typical value 0.95V before first
-	 * DRAM access, set DVS1 to 0.85v for suspend.
+	 * Increase VDD_SOC to typical value 0.95V before first
+	 * DRAM access, set DVS1 to 0.85V for suspend.
 	 * Enable DVS control through PMIC_STBY_REQ and
 	 * set B1_ENMODE=1 (ON by PMIC_ON_REQ=H)
 	 */
-#ifdef CONFIG_IMX8M_VDD_SOC_850MV
-	/* set DVS0 to 0.85v for special case*/
-	pmic_reg_write(p, PCA9450_BUCK1OUT_DVS0, 0x14);
-#else
-	pmic_reg_write(p, PCA9450_BUCK1OUT_DVS0, 0x1C);
-#endif
-	pmic_reg_write(p, PCA9450_BUCK1OUT_DVS1, 0x14);
-	pmic_reg_write(p, PCA9450_BUCK1CTRL, 0x59);
+	if (CONFIG_IS_ENABLED(IMX8M_VDD_SOC_850MV))
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x14);
+	else
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x1C);
 
-	/* Kernel uses OD/OD freq for SOC */
-	/* To avoid timing risk from SOC to ARM,increase VDD_ARM to OD voltage 0.95v */
-	pmic_reg_write(p, PCA9450_BUCK2OUT_DVS0, 0x1C);
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x14);
+	pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
+
+	/*
+	 * Kernel uses OD/OD freq for SOC.
+	 * To avoid timing risk from SOC to ARM,increase VDD_ARM to OD
+	 * voltage 0.95V.
+	 */
+
+	pmic_reg_write(dev, PCA9450_BUCK2OUT_DVS0, 0x1C);
 
 	return 0;
 }
@@ -135,8 +139,6 @@ void board_init_f(ulong dummy)
 
 	enable_tzc380();
 
-	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
-
 	power_init_board();
 
 	/* DDR initialization */
diff --git a/configs/imx8mp_evk_defconfig b/configs/imx8mp_evk_defconfig
index 820dc36e9cdd..0675f0f4f41b 100644
--- a/configs/imx8mp_evk_defconfig
+++ b/configs/imx8mp_evk_defconfig
@@ -7,9 +7,6 @@ CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_ENV_SIZE=0x1000
 CONFIG_ENV_OFFSET=0x400000
-CONFIG_SYS_I2C_MXC_I2C1=y
-CONFIG_SYS_I2C_MXC_I2C2=y
-CONFIG_SYS_I2C_MXC_I2C3=y
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="imx8mp-evk"
 CONFIG_SPL_TEXT_BASE=0x920000
@@ -88,8 +85,6 @@ CONFIG_FASTBOOT_MMC_USER_SUPPORT=y
 CONFIG_MXC_GPIO=y
 CONFIG_DM_PCA953X=y
 CONFIG_DM_I2C=y
-# CONFIG_SPL_DM_I2C is not set
-CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_LED=y
 CONFIG_LED_GPIO=y
 CONFIG_SUPPORT_EMMC_BOOT=y
@@ -110,15 +105,16 @@ CONFIG_PHY_IMX8MQ_USB=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 CONFIG_PINCTRL_IMX8M=y
-CONFIG_SPL_POWER_LEGACY=y
 CONFIG_POWER_DOMAIN=y
 CONFIG_IMX8M_POWER_DOMAIN=y
 CONFIG_IMX8MP_HSIOMIX_BLKCTRL=y
-CONFIG_POWER_PCA9450=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_PCA9450=y
+CONFIG_SPL_DM_PMIC_PCA9450=y
 CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_PCA9450=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_REGULATOR_GPIO=y
-CONFIG_SPL_POWER_I2C=y
 CONFIG_DM_SERIAL=y
 CONFIG_MXC_UART=y
 CONFIG_SYSRESET=y
-- 
2.34.1