diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/813-v6.5-0008-nvmem-rockchip-otp-Add-support-for-RK3588.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/813-v6.5-0008-nvmem-rockchip-otp-Add-support-for-RK3588.patch | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/813-v6.5-0008-nvmem-rockchip-otp-Add-support-for-RK3588.patch b/target/linux/generic/backport-5.15/813-v6.5-0008-nvmem-rockchip-otp-Add-support-for-RK3588.patch new file mode 100644 index 0000000000..c1e2231c9e --- /dev/null +++ b/target/linux/generic/backport-5.15/813-v6.5-0008-nvmem-rockchip-otp-Add-support-for-RK3588.patch @@ -0,0 +1,129 @@ +From 8ab099fafbbc8c9607c399d21a774784a6cb8b45 Mon Sep 17 00:00:00 2001 +From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> +Date: Sun, 11 Jun 2023 15:03:17 +0100 +Subject: [PATCH] nvmem: rockchip-otp: Add support for RK3588 + +Add support for the OTP memory device found on the Rockchip RK3588 SoC. + +While here, remove the unnecessary 'void *' casts in the OF device ID +table. + +Co-developed-by: Finley Xiao <finley.xiao@rock-chips.com> +Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com> +Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> +Tested-by: Vincent Legoll <vincent.legoll@gmail.com> +Reviewed-by: Heiko Stuebner <heiko@sntech.de> +Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> +Message-ID: <20230611140330.154222-14-srinivas.kandagatla@linaro.org> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/nvmem/rockchip-otp.c | 78 +++++++++++++++++++++++++++++++++++- + 1 file changed, 76 insertions(+), 2 deletions(-) + +--- a/drivers/nvmem/rockchip-otp.c ++++ b/drivers/nvmem/rockchip-otp.c +@@ -54,6 +54,19 @@ + + #define OTPC_TIMEOUT 10000 + ++/* RK3588 Register */ ++#define RK3588_OTPC_AUTO_CTRL 0x04 ++#define RK3588_OTPC_AUTO_EN 0x08 ++#define RK3588_OTPC_INT_ST 0x84 ++#define RK3588_OTPC_DOUT0 0x20 ++#define RK3588_NO_SECURE_OFFSET 0x300 ++#define RK3588_NBYTES 4 ++#define RK3588_BURST_NUM 1 ++#define RK3588_BURST_SHIFT 8 ++#define RK3588_ADDR_SHIFT 16 ++#define RK3588_AUTO_EN BIT(0) ++#define RK3588_RD_DONE BIT(1) ++ + struct rockchip_data { + int size; + const char * const *clks; +@@ -171,6 +184,52 @@ read_end: + return ret; + } + ++static int rk3588_otp_read(void *context, unsigned int offset, ++ void *val, size_t bytes) ++{ ++ struct rockchip_otp *otp = context; ++ unsigned int addr_start, addr_end, addr_len; ++ int ret, i = 0; ++ u32 data; ++ u8 *buf; ++ ++ addr_start = round_down(offset, RK3588_NBYTES) / RK3588_NBYTES; ++ addr_end = round_up(offset + bytes, RK3588_NBYTES) / RK3588_NBYTES; ++ addr_len = addr_end - addr_start; ++ addr_start += RK3588_NO_SECURE_OFFSET; ++ ++ buf = kzalloc(array_size(addr_len, RK3588_NBYTES), GFP_KERNEL); ++ if (!buf) ++ return -ENOMEM; ++ ++ while (addr_len--) { ++ writel((addr_start << RK3588_ADDR_SHIFT) | ++ (RK3588_BURST_NUM << RK3588_BURST_SHIFT), ++ otp->base + RK3588_OTPC_AUTO_CTRL); ++ writel(RK3588_AUTO_EN, otp->base + RK3588_OTPC_AUTO_EN); ++ ++ ret = rockchip_otp_wait_status(otp, RK3588_OTPC_INT_ST, ++ RK3588_RD_DONE); ++ if (ret < 0) { ++ dev_err(otp->dev, "timeout during read setup\n"); ++ goto read_end; ++ } ++ ++ data = readl(otp->base + RK3588_OTPC_DOUT0); ++ memcpy(&buf[i], &data, RK3588_NBYTES); ++ ++ i += RK3588_NBYTES; ++ addr_start++; ++ } ++ ++ memcpy(val, buf + offset % RK3588_NBYTES, bytes); ++ ++read_end: ++ kfree(buf); ++ ++ return ret; ++} ++ + static int rockchip_otp_read(void *context, unsigned int offset, + void *val, size_t bytes) + { +@@ -213,14 +272,29 @@ static const struct rockchip_data px30_d + .reg_read = px30_otp_read, + }; + ++static const char * const rk3588_otp_clocks[] = { ++ "otp", "apb_pclk", "phy", "arb", ++}; ++ ++static const struct rockchip_data rk3588_data = { ++ .size = 0x400, ++ .clks = rk3588_otp_clocks, ++ .num_clks = ARRAY_SIZE(rk3588_otp_clocks), ++ .reg_read = rk3588_otp_read, ++}; ++ + static const struct of_device_id rockchip_otp_match[] = { + { + .compatible = "rockchip,px30-otp", +- .data = (void *)&px30_data, ++ .data = &px30_data, + }, + { + .compatible = "rockchip,rk3308-otp", +- .data = (void *)&px30_data, ++ .data = &px30_data, ++ }, ++ { ++ .compatible = "rockchip,rk3588-otp", ++ .data = &rk3588_data, + }, + { /* sentinel */ }, + }; |