Bryan O'Donoghue 3fda892563 nvmem: imx-ocotp: Change TIMING calculation to u-boot algorithm ... [ Upstream commit 159dbaf57b ] The RELAX field of the OCOTP block is turning out as a zero on i.MX8MM. This messes up the subsequent re-load of the fuse shadow registers. After some discussion with people @ NXP its clear we have missed a trick here in Linux. The OCOTP fuse programming time has a physical minimum 'burn time' that is not related to the ipg_clk. We need to define the RELAX, STROBE_READ and STROBE_PROG fields in terms of desired timings to allow for the burn-in to safely complete. Right now only the RELAX field is calculated in terms of an absolute time and we are ending up with a value of zero. This patch inherits the u-boot timings for the OCOTP_TIMING calculation on the i.MX6 and i.MX8. Those timings are known to work and critically specify values such as STROBE_PROG as a minimum timing. Fixes: 0642bac7da ("nvmem: imx-ocotp: add write support") Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Suggested-by: Leonard Crestez <leonard.crestez@nxp.com> Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-27 14:50:58 +01:00
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bcm-ocotp.c
core.c	nvmem: core: return error code instead of NULL from nvmem_device_get	2019-11-20 18:46:31 +01:00
imx-iim.c
imx-ocotp.c	nvmem: imx-ocotp: Change TIMING calculation to u-boot algorithm	2020-01-27 14:50:58 +01:00
Kconfig	nvmem: Add Spreadtrum SC27XX efuse support	2018-07-15 14:03:05 +02:00
lpc18xx_eeprom.c	headers: separate linux/mod_devicetable.h from linux/platform_device.h	2018-07-07 17:52:26 +02:00
lpc18xx_otp.c
Makefile	nvmem: Add Spreadtrum SC27XX efuse support	2018-07-15 14:03:05 +02:00
meson-efuse.c	nvmem: meson-efuse: add write support	2018-05-14 16:20:48 +02:00
meson-mx-efuse.c
mtk-efuse.c	headers: separate linux/mod_devicetable.h from linux/platform_device.h	2018-07-07 17:52:26 +02:00
mxs-ocotp.c
qfprom.c	headers: separate linux/mod_devicetable.h from linux/platform_device.h	2018-07-07 17:52:26 +02:00
rave-sp-eeprom.c	nvmem: rave-sp-eeprom: Remove VLA usage	2018-07-07 17:30:46 +02:00
rockchip-efuse.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
sc27xx-efuse.c	nvmem: Add Spreadtrum SC27XX efuse support	2018-07-15 14:03:05 +02:00
snvs_lpgpr.c
sunxi_sid.c	nvmem: sunxi_sid: Support SID on A83T and H5	2019-06-15 11:54:07 +02:00
uniphier-efuse.c	headers: separate linux/mod_devicetable.h from linux/platform_device.h	2018-07-07 17:52:26 +02:00
vf610-ocotp.c