git.openwrt.org Git - openwrt/staging/xback.git/blob

   1 From 0536fa6e6fa3e48f4ca11855b586c277be524fbe Mon Sep 17 00:00:00 2001
   2 From: David Wu <david.wu@rock-chips.com>
   3 Date: Tue, 21 May 2024 21:10:13 +0000
   4 Subject: [PATCH] soc: rockchip: io-domain: Add RK3308 IO voltage domains
   5
   6 Add IO voltage domains support for the RK3308 SoC.
   7
   8 Signed-off-by: David Wu <david.wu@rock-chips.com>
   9 Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
  10 Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
  11 Link: https://lore.kernel.org/r/20240521211029.1236094-11-jonas@kwiboo.se
  12 Signed-off-by: Heiko Stuebner <heiko@sntech.de>
  13 ---
  14  drivers/soc/rockchip/io-domain.c | 40 ++++++++++++++++++++++++++++++++
  15  1 file changed, 40 insertions(+)
  16
  17 --- a/drivers/soc/rockchip/io-domain.c
  18 +++ b/drivers/soc/rockchip/io-domain.c
  19 @@ -39,6 +39,10 @@
  20  #define RK3288_SOC_CON2_FLASH0         BIT(7)
  21  #define RK3288_SOC_FLASH_SUPPLY_NUM    2
  22
  23 +#define RK3308_SOC_CON0                        0x300
  24 +#define RK3308_SOC_CON0_VCCIO3         BIT(8)
  25 +#define RK3308_SOC_VCCIO3_SUPPLY_NUM   3
  26 +
  27  #define RK3328_SOC_CON4                        0x410
  28  #define RK3328_SOC_CON4_VCCIO2         BIT(7)
  29  #define RK3328_SOC_VCCIO2_SUPPLY_NUM   1
  30 @@ -229,6 +233,25 @@ static void rk3288_iodomain_init(struct
  31                 dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
  32  }
  33
  34 +static void rk3308_iodomain_init(struct rockchip_iodomain *iod)
  35 +{
  36 +       int ret;
  37 +       u32 val;
  38 +
  39 +       /* if no vccio3 supply we should leave things alone */
  40 +       if (!iod->supplies[RK3308_SOC_VCCIO3_SUPPLY_NUM].reg)
  41 +               return;
  42 +
  43 +       /*
  44 +        * set vccio3 iodomain to also use this framework
  45 +        * instead of a special gpio.
  46 +        */
  47 +       val = RK3308_SOC_CON0_VCCIO3 | (RK3308_SOC_CON0_VCCIO3 << 16);
  48 +       ret = regmap_write(iod->grf, RK3308_SOC_CON0, val);
  49 +       if (ret < 0)
  50 +               dev_warn(iod->dev, "couldn't update vccio3 vsel ctrl\n");
  51 +}
  52 +
  53  static void rk3328_iodomain_init(struct rockchip_iodomain *iod)
  54  {
  55         int ret;
  56 @@ -376,6 +399,19 @@ static const struct rockchip_iodomain_so
  57         .init = rk3288_iodomain_init,
  58  };
  59
  60 +static const struct rockchip_iodomain_soc_data soc_data_rk3308 = {
  61 +       .grf_offset = 0x300,
  62 +       .supply_names = {
  63 +               "vccio0",
  64 +               "vccio1",
  65 +               "vccio2",
  66 +               "vccio3",
  67 +               "vccio4",
  68 +               "vccio5",
  69 +       },
  70 +       .init = rk3308_iodomain_init,
  71 +};
  72 +
  73  static const struct rockchip_iodomain_soc_data soc_data_rk3328 = {
  74         .grf_offset = 0x410,
  75         .supply_names = {
  76 @@ -529,6 +565,10 @@ static const struct of_device_id rockchi
  77                 .data = &soc_data_rk3288
  78         },
  79         {
  80 +               .compatible = "rockchip,rk3308-io-voltage-domain",
  81 +               .data = &soc_data_rk3308
  82 +       },
  83 +       {
  84                 .compatible = "rockchip,rk3328-io-voltage-domain",
  85                 .data = &soc_data_rk3328
  86         },