diff options
Diffstat (limited to 'drivers/nvmem/imx-ocotp.c')
| -rw-r--r-- | drivers/nvmem/imx-ocotp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c index 08f41328cc71..14284e866f26 100644 --- 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_nvmem_config = { .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_params = { .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_params = { .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_params = { .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_params = { .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[] = { |