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[6/6] nvmem: imx-ocotp: imx8mq is compatible with imx6 not imx7

Message ID 20190626102733.11708-7-srinivas.kandagatla@linaro.org
State New
Headers show
Series nvmem: patches for 5.3 set 2 | expand

Commit Message

Srinivas Kandagatla June 26, 2019, 10:27 a.m. UTC 
From: Leonard Crestez <leonard.crestez@nxp.com>


According to NXP Reference Manuals and uboot/atf sources the OCOTP block
on imx8m behaves more like imx6 than imx7.

- Fuses can be read/written 32bits at a time (no imx7-like banking)
- The OCOTP_HW_OCOTP_TIMING register is like imx6 not imx7

Since nvmem doesn't support uboot-style "sense" and "override" this
issue only affected "write" which is very rarely used.

Fixes: 163c0dbd0cb1 ("nvmem: imx-ocotp: add support for imx8mq")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>

Reviewed-by: Peng Fan <peng.fan@nxp.com>

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

---
 drivers/nvmem/imx-ocotp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.21.0
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Patch

diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
index 340ab336f987..42d4451e7d67 100644
--- a/drivers/nvmem/imx-ocotp.c
+++ b/drivers/nvmem/imx-ocotp.c
@@ -469,8 +469,8 @@  static const struct ocotp_params imx7ulp_params = {
 
 static const struct ocotp_params imx8mq_params = {
 	.nregs = 256,
-	.bank_address_words = 4,
-	.set_timing = imx_ocotp_set_imx7_timing,
+	.bank_address_words = 0,
+	.set_timing = imx_ocotp_set_imx6_timing,
 };
 
 static const struct ocotp_params imx8mm_params = {