[PATCH 17/17] board: k1: enable pmic in spl

[Raymond Mao <raymondmaoca@gmail.com>]

From: Raymond Mao <raymond.mao@riscstar.com>

Add Spacemit P1 SoC support in SPL. And set the default voltage
for BUCKs and LDOs.

Signed-off-by: Raymond Mao <raymond.mao@riscstar.com>
---
 arch/riscv/dts/k1-spl.dts | 128 ++++++++++++++++++++++++++++++++++----
 board/spacemit/k1/spl.c   |  83 ++++++++++++++++++++----
 configs/k1_defconfig      |   9 +++
 3 files changed, 198 insertions(+), 22 deletions(-)

diff --git a/arch/riscv/dts/k1-spl.dts b/arch/riscv/dts/k1-spl.dts
index f8b280fa96f..6dedca20f51 100644
--- a/arch/riscv/dts/k1-spl.dts
+++ b/arch/riscv/dts/k1-spl.dts
@@ -110,17 +110,6 @@
 		};
 	};
 
-	i2c@d401d800 {		/* i2c8 */
-		status = "okay";
-		bootph-pre-ram;
-		pmic@41 {
-			compatible = "pmic";
-			reg = <0x41>;
-			status = "okay";
-			bootph-pre-ram;
-		};
-	};
-
 	reset-controller@d4050000 {
 		status = "okay";
 		bootph-pre-ram;
@@ -131,3 +120,120 @@
 	status = "okay";
 	bootph-pre-ram;
 };
+
+&i2c8 {
+	status = "okay";
+	bootph-pre-ram;
+	pmic@41 {
+		compatible = "spacemit,p1";
+		reg = <0x41>;
+		status = "okay";
+		bootph-pre-ram;
+
+		regulators {
+			buck1 {
+				regulator-name = "vdd_core";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+				bootph-pre-ram;
+			};
+
+			buck2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck3_1v8: buck3 {
+				regulator-name = "vdd_1v8";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+				bootph-pre-ram;
+			};
+
+			buck4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck5 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			buck6 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3450000>;
+				regulator-ramp-delay = <5000>;
+				regulator-always-on;
+			};
+
+			aldo1 {
+				regulator-name = "vdd_1v8_mmc";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-boot-on;
+				bootph-pre-ram;
+			};
+
+			aldo2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			aldo3 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			aldo4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo1 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo2 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo3 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo4 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo5 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo6 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+
+			dldo7 {
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+			};
+		};
+	};
+};
diff --git a/board/spacemit/k1/spl.c b/board/spacemit/k1/spl.c
index 54bad9000fe..c08d168fd52 100644
--- a/board/spacemit/k1/spl.c
+++ b/board/spacemit/k1/spl.c
@@ -8,6 +8,7 @@
 #include <clk-uclass.h>
 #include <cpu_func.h>
 #include <configs/k1.h>
+#include <cpu_func.h>
 #include <dm/device.h>
 #include <dm/uclass.h>
 #include <dt-bindings/pinctrl/k1-pinctrl.h>
@@ -15,8 +16,10 @@
 #include <i2c.h>
 #include <linux/delay.h>
 #include <log.h>
+#include <power/regulator.h>
 #include <spl.h>
 #include <tlv_eeprom.h>
+#include "tlv_codes.h"
 
 #define I2C_PIN_CONFIG(x)       ((x) | EDGE_NONE | PULL_UP | PAD_1V8_DS2)
 #define I2C_BUF_SIZE		64
@@ -117,6 +120,73 @@ void serial_early_init(void)
 		panic("Serial uclass init failed: %d\n", ret);
 }
 
+static void set_vdd_core(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = regulator_get_by_platname("vdd_core", &dev);
+	if (ret)
+		panic("Fail to detect vdd_core (%d)\n", ret);
+	ret = regulator_set_enable(dev, true);
+	if (ret)
+		log_warning("Fail to enable vdd_core (%d)\n", ret);
+	ret = regulator_get_value(dev);
+	if (ret < 0)
+		log_warning("Fail to read vdd_core (%d)\n", ret);
+	log_info("vdd_core, value:%d\n", ret);
+}
+
+static void set_vdd_1v8(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = regulator_get_by_platname("vdd_1v8", &dev);
+	if (ret)
+		panic("Fail to detect vdd_1v8 (%d)\n", ret);
+	ret = regulator_set_value(dev, 1800000);
+	if (ret)
+		log_warning("Fail to set vdd_1v8 as 1800000 (%d)\n", ret);
+	ret = regulator_set_enable(dev, true);
+	if (ret)
+		log_warning("Fail to enable vdd_1v8 (%d)\n", ret);
+	ret = regulator_get_value(dev);
+	if (ret < 0)
+		log_warning("Fail to read vdd_1v8 (%d)\n", ret);
+	log_info("vdd_1v8, value:%d\n", ret);
+}
+
+static void set_vdd_mmc(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = regulator_get_by_platname("vdd_1v8_mmc", &dev);
+	if (ret)
+		panic("Fail to detect vdd_1v8_mmc (%d)\n", ret);
+	ret = regulator_set_enable(dev, true);
+	if (ret)
+		log_warning("Fail to enable vdd_1v8_mmc (%d)\n", ret);
+	ret = regulator_get_value(dev);
+	if (ret < 0)
+		log_warning("Fail to read vdd_1v8_mmc (%d)\n", ret);
+	log_info("vdd_1v8_mmc, value:%d\n", ret);
+}
+
+void pmic_init(void)
+{
+	struct udevice *pmic_dev;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_PMIC, 0, &pmic_dev);
+	if (ret)
+		panic("Fail to detect PMIC (%d)\n", ret);
+	set_vdd_core();
+	set_vdd_1v8();
+	set_vdd_mmc();
+}
+
 /* Load DDR training firmware */
 int init_ddr_firmware(void)
 {
@@ -167,6 +237,8 @@ void board_init_f(ulong dummy)
 		log_info("Fail to detect board:%d\n", ret);
 	else
 		log_info("Get board name:%s\n", (char *)i2c_buf);
+	pmic_init();
+
 	ddr_early_init();
 }
 
@@ -175,17 +247,6 @@ u32 spl_boot_device(void)
 	return BOOT_DEVICE_NOR;
 }
 
-void pmic_init(void)
-{
-	struct udevice *pmic_dev = NULL;
-	int ret;
-
-	ret = uclass_get_device(UCLASS_PMIC, 0, &pmic_dev);
-	if (ret)
-		panic("Fail to detect PMIC:%d\n", ret);
-}
-
 void spl_board_init(void)
 {
-	pmic_init();
 }
diff --git a/configs/k1_defconfig b/configs/k1_defconfig
index 0d5c3932797..49a2dbca4f0 100644
--- a/configs/k1_defconfig
+++ b/configs/k1_defconfig
@@ -66,3 +66,12 @@ CONFIG_SPL_I2C_EEPROM=y
 CONFIG_CMD_TLV_EEPROM=y
 CONFIG_SPL_CMD_TLV_EEPROM=y
 CONFIG_LOG=y
+CONFIG_SPL_POWER=y
+CONFIG_DM_PMIC=y
+CONFIG_SPL_DM_PMIC=y
+CONFIG_PMIC_SPACEMIT_P1=y
+CONFIG_SPL_PMIC_SPACEMIT_P1=y
+CONFIG_DM_REGULATOR=y
+CONFIG_SPL_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_SPACEMIT_P1=y
+CONFIG_SPL_DM_REGULATOR_SPACEMIT_P1=y
-- 
2.25.1