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Commit 9d6a8dab authored by Bryan O'Donoghue's avatar Bryan O'Donoghue Committed by Greg Kroah-Hartman
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nvmem: imx-ocotp: Restrict OTP write to IMX6 processors 



i.MX7S/D have a different scheme for addressing the OTP registers inside
the OCOTP block. Currently it's possible to address the wrong OTP registers
given the disparity between IMX6 and IMX7 OTP addressing.

Since OTP programming is one-time destructive its important we restrict
this interface ASAP.

Fixes: 0642bac7 ("nvmem: imx-ocotp: add write support")

Signed-off-by: default avatarBryan O'Donoghue <pure.logic@nexus-software.ie>
Acked-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 71c5dd50

drivers/nvmem/imx-ocotp.c

+2 −0
Original line number Diff line number Diff line
@@ -346,6 +346,8 @@ static int imx_ocotp_probe(struct platform_device *pdev) 
	imx_ocotp_nvmem_config.dev = dev;

	imx_ocotp_nvmem_config.priv = priv;

	priv->config = &imx_ocotp_nvmem_config;

	if (of_device_is_compatible(pdev->dev.of_node, "fsl,imx7d-ocotp"))

		imx_ocotp_nvmem_config.read_only = true;

	nvmem = nvmem_register(&imx_ocotp_nvmem_config);



	if (IS_ERR(nvmem))