rockchip: efuse: Add support for RK3328

Add support for rk3328 compatible.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/drivers/misc/rockchip-efuse.c b/drivers/misc/rockchip-efuse.c
index 99220d5b1eab84f4deca8f2f98be8a606d563d14..8cf61e36aeff8e1eedbebda0177dcd655ec6d4b8 100644 (file)
--- a/drivers/misc/rockchip-efuse.c
+++ b/drivers/misc/rockchip-efuse.c
@@ -13,6 +13,7 @@
 #include <dm.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
+#include <linux/iopoll.h>
 #include <malloc.h>
 #include <misc.h>
 
@@ -31,6 +32,12 @@
 #define EFUSE_STROBE           BIT(1)
 #define EFUSE_CSB              BIT(0)
 #define EFUSE_DOUT             0x0004
+#define RK3328_INT_STATUS      0x0018
+#define RK3328_INT_FINISH      BIT(0)
+#define RK3328_DOUT            0x0020
+#define RK3328_AUTO_CTRL       0x0024
+#define RK3328_AUTO_RD         BIT(1)
+#define RK3328_AUTO_ENB                BIT(0)
 
 struct rockchip_efuse_plat {
        void __iomem *base;
@@ -38,6 +45,7 @@ struct rockchip_efuse_plat {
 
 struct rockchip_efuse_data {
        int (*read)(struct udevice *dev, int offset, void *buf, int size);
+       int offset;
        int size;
        int block_size;
 };
@@ -103,6 +111,30 @@ static int rockchip_rk3288_efuse_read(struct udevice *dev, int offset,
        return 0;
 }
 
+static int rockchip_rk3328_efuse_read(struct udevice *dev, int offset,
+                                     void *buf, int size)
+{
+       struct rockchip_efuse_plat *efuse = dev_get_plat(dev);
+       u32 status, *buffer = buf;
+       int ret;
+
+       while (size--) {
+               writel(RK3328_AUTO_RD | RK3328_AUTO_ENB | RK3399_ADDR(offset++),
+                      efuse->base + RK3328_AUTO_CTRL);
+               udelay(1);
+
+               ret = readl_poll_sleep_timeout(efuse->base + RK3328_INT_STATUS,
+                       status, (status & RK3328_INT_FINISH), 1, 50);
+               if (ret)
+                       return ret;
+
+               *buffer++ = readl(efuse->base + RK3328_DOUT);
+               writel(RK3328_INT_FINISH, efuse->base + RK3328_INT_STATUS);
+       }
+
+       return 0;
+}
+
 static int rockchip_rk3399_efuse_read(struct udevice *dev, int offset,
                                      void *buf, int size)
 {
@@ -144,6 +176,8 @@ static int rockchip_efuse_read(struct udevice *dev, int offset,
        if (!data->read)
                return -ENOSYS;
 
+       offset += data->offset;
+
        if (data->block_size <= 1)
                return data->read(dev, offset, buf, size);
 
@@ -182,6 +216,13 @@ static const struct rockchip_efuse_data rk3288_data = {
        .size = 0x20,
 };
 
+static const struct rockchip_efuse_data rk3328_data = {
+       .read = rockchip_rk3328_efuse_read,
+       .offset = 0x60,
+       .size = 0x20,
+       .block_size = 4,
+};
+
 static const struct rockchip_efuse_data rk3399_data = {
        .read = rockchip_rk3399_efuse_read,
        .size = 0x80,
@@ -205,6 +246,10 @@ static const struct udevice_id rockchip_efuse_ids[] = {
                .compatible = "rockchip,rk3288-efuse",
                .data = (ulong)&rk3288_data,
        },
+       {
+               .compatible = "rockchip,rk3328-efuse",
+               .data = (ulong)&rk3328_data,
+       },
        {
                .compatible = "rockchip,rk3399-efuse",
                .data = (ulong)&rk3399_data,