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rockchip: otp: Add support for rk3568 

This adds the necessary data for handling otp on the rk3568.

Change-Id: Id5e8a3a1561604bb307ef17e06d11d7e62d8a840
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao 2020-12-07 15:11:02 +08:00 committed by Jianhong Chen
parent b0760df876
commit fd7b518283
2 changed files with 61 additions and 0 deletions
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59
drivers/misc/rockchip-otp.c
View File

@ -97,6 +97,57 @@ read_end:
return ret;
}
static int rockchip_rk3568_otp_read(struct udevice *dev, int offset, void *buf,
int size)
{
struct rockchip_otp_platdata *otp = dev_get_platdata(dev);
unsigned int addr_start, addr_end, addr_offset, addr_len;
u32 out_value;
u8 *buffer;
int ret = 0, i = 0;
addr_start = rounddown(offset, RK3568_NBYTES) / RK3568_NBYTES;
addr_end = roundup(offset + size, RK3568_NBYTES) / RK3568_NBYTES;
addr_offset = offset % RK3568_NBYTES;
addr_len = addr_end - addr_start;
buffer = calloc(1, sizeof(*buffer) * addr_len * RK3568_NBYTES);
if (!buffer)
return -ENOMEM;
ret = rockchip_otp_ecc_enable(otp, false);
if (ret < 0) {
printf("%s rockchip_otp_ecc_enable err\n", __func__);
return ret;
}
writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL);
udelay(5);
while (addr_len--) {
writel(addr_start++ | OTPC_USER_ADDR_MASK,
otp->base + OTPC_USER_ADDR);
writel(OTPC_USER_FSM_ENABLE | OTPC_USER_FSM_ENABLE_MASK,
otp->base + OTPC_USER_ENABLE);
ret = rockchip_otp_wait_status(otp, OTPC_USER_DONE);
if (ret < 0) {
printf("%s timeout during read setup\n", __func__);
goto read_end;
}
out_value = readl(otp->base + OTPC_USER_Q);
memcpy(&buffer[i], &out_value, RK3568_NBYTES);
i += RK3568_NBYTES;
}
memcpy(buf, buffer + addr_offset, size);
read_end:
writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL);
kfree(buffer);
return ret;
}
static int rockchip_rv1126_otp_init(struct udevice *dev)
{
struct rockchip_otp_platdata *otp = dev_get_platdata(dev);
@ -189,6 +240,10 @@ static const struct otp_data px30_data = {
.read = rockchip_px30_otp_read,
};
static const struct otp_data rk3568_data = {
.read = rockchip_rk3568_otp_read,
};
static const struct otp_data rv1126_data = {
.init = rockchip_rv1126_otp_init,
.read = rockchip_rv1126_otp_read,
@ -203,6 +258,10 @@ static const struct udevice_id rockchip_otp_ids[] = {
.compatible = "rockchip,rk3308-otp",
.data = (ulong)&px30_data,
},
{
.compatible = "rockchip,rk3568-otp",
.data = (ulong)&rk3568_data,
},
{
.compatible = "rockchip,rv1126-otp",
.data = (ulong)&rv1126_data,

2
include/rockchip-otp.h
View File

@ -42,6 +42,8 @@
#define OTPC_TIMEOUT 10000
#define RK3568_NBYTES 2
#define RV1126_OTP_NVM_CEB 0x00
#define RV1126_OTP_NVM_RSTB 0x04
#define RV1126_OTP_NVM_ST 0x18