mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 22:23:27 +00:00
93 lines
2.8 KiB
Diff
93 lines
2.8 KiB
Diff
From d0221a780cbc99fec6c27a98dba2828dc5735c00 Mon Sep 17 00:00:00 2001
|
|
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
|
Date: Wed, 13 Oct 2021 14:19:57 +0100
|
|
Subject: [PATCH] nvmem: imx-ocotp: add support for post processing
|
|
|
|
Add .cell_post_process callback for imx-ocotp to deal with MAC address,
|
|
since MAC address need to be reversed byte for some i.MX SoCs.
|
|
|
|
Tested-by: Joakim Zhang <qiangqing.zhang@nxp.com>
|
|
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
|
Link: https://lore.kernel.org/r/20211013131957.30271-4-srinivas.kandagatla@linaro.org
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
---
|
|
drivers/nvmem/imx-ocotp.c | 25 +++++++++++++++++++++++++
|
|
1 file changed, 25 insertions(+)
|
|
|
|
--- a/drivers/nvmem/imx-ocotp.c
|
|
+++ b/drivers/nvmem/imx-ocotp.c
|
|
@@ -97,6 +97,7 @@ struct ocotp_params {
|
|
unsigned int bank_address_words;
|
|
void (*set_timing)(struct ocotp_priv *priv);
|
|
struct ocotp_ctrl_reg ctrl;
|
|
+ bool reverse_mac_address;
|
|
};
|
|
|
|
static int imx_ocotp_wait_for_busy(struct ocotp_priv *priv, u32 flags)
|
|
@@ -221,6 +222,25 @@ read_end:
|
|
return ret;
|
|
}
|
|
|
|
+static int imx_ocotp_cell_pp(void *context, const char *id, unsigned int offset,
|
|
+ void *data, size_t bytes)
|
|
+{
|
|
+ struct ocotp_priv *priv = context;
|
|
+
|
|
+ /* Deal with some post processing of nvmem cell data */
|
|
+ if (id && !strcmp(id, "mac-address")) {
|
|
+ if (priv->params->reverse_mac_address) {
|
|
+ u8 *buf = data;
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < bytes/2; i++)
|
|
+ swap(buf[i], buf[bytes - i - 1]);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static void imx_ocotp_set_imx6_timing(struct ocotp_priv *priv)
|
|
{
|
|
unsigned long clk_rate;
|
|
@@ -468,6 +488,7 @@ static struct nvmem_config imx_ocotp_nvm
|
|
.stride = 1,
|
|
.reg_read = imx_ocotp_read,
|
|
.reg_write = imx_ocotp_write,
|
|
+ .cell_post_process = imx_ocotp_cell_pp,
|
|
};
|
|
|
|
static const struct ocotp_params imx6q_params = {
|
|
@@ -530,6 +551,7 @@ static const struct ocotp_params imx8mq_
|
|
.bank_address_words = 0,
|
|
.set_timing = imx_ocotp_set_imx6_timing,
|
|
.ctrl = IMX_OCOTP_BM_CTRL_DEFAULT,
|
|
+ .reverse_mac_address = true,
|
|
};
|
|
|
|
static const struct ocotp_params imx8mm_params = {
|
|
@@ -537,6 +559,7 @@ static const struct ocotp_params imx8mm_
|
|
.bank_address_words = 0,
|
|
.set_timing = imx_ocotp_set_imx6_timing,
|
|
.ctrl = IMX_OCOTP_BM_CTRL_DEFAULT,
|
|
+ .reverse_mac_address = true,
|
|
};
|
|
|
|
static const struct ocotp_params imx8mn_params = {
|
|
@@ -544,6 +567,7 @@ static const struct ocotp_params imx8mn_
|
|
.bank_address_words = 0,
|
|
.set_timing = imx_ocotp_set_imx6_timing,
|
|
.ctrl = IMX_OCOTP_BM_CTRL_DEFAULT,
|
|
+ .reverse_mac_address = true,
|
|
};
|
|
|
|
static const struct ocotp_params imx8mp_params = {
|
|
@@ -551,6 +575,7 @@ static const struct ocotp_params imx8mp_
|
|
.bank_address_words = 0,
|
|
.set_timing = imx_ocotp_set_imx6_timing,
|
|
.ctrl = IMX_OCOTP_BM_CTRL_8MP,
|
|
+ .reverse_mac_address = true,
|
|
};
|
|
|
|
static const struct of_device_id imx_ocotp_dt_ids[] = {
|