[PATCH 10/13] soc: rockchip: io-domain: Add RK3308 IO voltage domains

Jonas Karlman
2024-05-21T21:11:40Z

From: David Wu <david.wu@rock-chips.com>

Add IO voltage domains support for the RK3308 SoC.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
drivers/soc/rockchip/io-domain.c | 40 ++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)

diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c
index 18f809c160a7..fd9fd31f71c2 100644
--- a/drivers/soc/rockchip/io-domain.c
+++ b/drivers/soc/rockchip/io-domain.c
@@ -39,6 +39,10 @@
#define RK3288_SOC_CON2_FLASH0 BIT(7)
#define RK3288_SOC_FLASH_SUPPLY_NUM 2

+#define RK3308_SOC_CON0 0x300
+#define RK3308_SOC_CON0_VCCIO3 BIT(8)
+#define RK3308_SOC_VCCIO3_SUPPLY_NUM 3
+
#define RK3328_SOC_CON4 0x410
#define RK3328_SOC_CON4_VCCIO2 BIT(7)
#define RK3328_SOC_VCCIO2_SUPPLY_NUM 1
@@ -229,6 +233,25 @@ static void rk3288_iodomain_init(struct rockchip_iodomain *iod)
dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
}

+static void rk3308_iodomain_init(struct rockchip_iodomain *iod)
+{
+ int ret;
+ u32 val;
+
+ /* if no vccio3 supply we should leave things alone */
+ if (!iod->supplies[RK3308_SOC_VCCIO3_SUPPLY_NUM].reg)
+ return;
+
+ /*
+ * set vccio3 iodomain to also use this framework
+ * instead of a special gpio.
+ */
+ val = RK3308_SOC_CON0_VCCIO3 | (RK3308_SOC_CON0_VCCIO3 << 16);
+ ret = regmap_write(iod->grf, RK3308_SOC_CON0, val);
+ if (ret < 0)
+ dev_warn(iod->dev, "couldn't update vccio3 vsel ctrl\n");
+}
+
static void rk3328_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
@@ -376,6 +399,19 @@ static const struct rockchip_iodomain_soc_data soc_data_rk3288 = {
.init = rk3288_iodomain_init,
};

+static const struct rockchip_iodomain_soc_data soc_data_rk3308 = {
+ .grf_offset = 0x300,
+ .supply_names = {
+ "vccio0",
+ "vccio1",
+ "vccio2",
+ "vccio3",
+ "vccio4",
+ "vccio5",
+ },
+ .init = rk3308_iodomain_init,
+};
+
static const struct rockchip_iodomain_soc_data soc_data_rk3328 = {
.grf_offset = 0x410,
.supply_names = {
@@ -528,6 +564,10 @@ static const struct of_device_id rockchip_iodomain_match[] = {
.compatible = "rockchip,rk3288-io-voltage-domain",
.data = &soc_data_rk3288
},
+ {
+ .compatible = "rockchip,rk3308-io-voltage-domain",
+ .data = &soc_data_rk3308
+ },
{
.compatible = "rockchip,rk3328-io-voltage-domain",
.data = &soc_data_rk3328
--
2.43.2