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nvmem: rockchip-otp: enable otp access permission lock

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Change-Id: I48fe4fc4481a789e055c22c6995de4b45d3dce2c
Signed-off-by: Hisping Lin <hisping.lin@rock-chips.com>
This commit is contained in:
Hisping Lin 2024-08-12 17:56:48 +08:00 • committed by Tao Huang
commit 565bcc6674
1 changed files with 7 additions and 6 deletions
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13
drivers/nvmem/rockchip-otp.c
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@ -25,6 +25,7 @@
#define OTPC_SBPI_CMD_VALID_PRE 0x0024
#define OTPC_SBPI_CS_VALID_PRE 0x0028
#define OTPC_SBPI_STATUS 0x002C
#define OTPC_LOCK_CTRL 0x0050
#define OTPC_USER_CTRL 0x0100
#define OTPC_USER_ADDR 0x0104
#define OTPC_USER_ENABLE 0x0108
@ -59,6 +60,8 @@
#define OTPC_USE_USER_MASK GENMASK(16, 16)
#define OTPC_USER_FSM_ENABLE BIT(0)
#define OTPC_USER_FSM_ENABLE_MASK GENMASK(16, 16)
#define OTPC_LOCK BIT(0)
#define OTPC_LOCK_MASK GENMASK(16, 16)
#define OTPC_SBPI_DONE BIT(1)
#define OTPC_USER_DONE BIT(2)
@ -456,12 +459,6 @@ static int rk3568_otp_read(void *context, unsigned int offset, void *val,
goto out;
}
ret = rockchip_otp_reset(otp);
if (ret) {
dev_err(otp->dev, "failed to reset otp phy\n");
goto disable_clks;
}
ret = px30_otp_ecc_enable(otp, true);
if (ret < 0) {
dev_err(otp->dev, "rockchip_otp_ecc_enable err\n");
@ -471,6 +468,7 @@ static int rk3568_otp_read(void *context, unsigned int offset, void *val,
writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL);
udelay(5);
while (addr_len--) {
writel(OTPC_LOCK | OTPC_LOCK_MASK, otp->base + OTPC_LOCK_CTRL);
writel(addr_start++ | OTPC_USER_ADDR_MASK,
otp->base + OTPC_USER_ADDR);
writel(OTPC_USER_FSM_ENABLE | OTPC_USER_FSM_ENABLE_MASK,
@ -489,11 +487,14 @@ static int rk3568_otp_read(void *context, unsigned int offset, void *val,
out_value = readl(otp->base + OTPC_USER_Q);
memcpy(&buf[i], &out_value, RK3568_NBYTES);
i += RK3568_NBYTES;
writel(OTPC_LOCK_MASK, otp->base + OTPC_LOCK_CTRL);
}
memcpy(val, buf + addr_offset, bytes);
read_end:
if (ret)
writel(OTPC_LOCK_MASK, otp->base + OTPC_LOCK_CTRL);
writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL);
disable_clks:
clk_bulk_disable_unprepare(otp->num_clks, otp->clks);