On imx6sx accessing OCOTP directly is wrong because the ocotp clock needs to be enabled first. Fix this by adding a nvmem-cells binding and using it on imx6sx, imx6ul and imx6ull.
The existing binding is kept around because it works fine on imx6qdl. This was initially reported by Lothar Waßmann <l...@karo-electronics.de> in reply to a patch adding imx6ul/ull support: Link: https://lkml.org/lkml/2017/6/9/578 --- Changes since v1: * Move nvmem_cell_read_u32 to nvmem core (Shawn Guo, Srinivas Kandagatla) * Adjust binding description (Rob Herring) * Adjust formatting of thermal info cells (Shawn Guo) * Link: https://lkml.org/lkml/2017/7/6/426 Leonard Crestez (5): thermal: imx: Add nvmem-cells alternate binding for OCOTP access nvmem: core: Add nvmem_cell_read_u32 thermal: imx: Add support for reading OCOTP through nvmem ARM: dts: imx6sx: Use nvmem-cells for tempmon ARM: dts: imx6ul: Add imx6ul-tempmon .../devicetree/bindings/thermal/imx-thermal.txt | 7 ++ arch/arm/boot/dts/imx6sx.dtsi | 13 ++- arch/arm/boot/dts/imx6ul.dtsi | 19 ++++ drivers/nvmem/core.c | 37 ++++++++ drivers/thermal/imx_thermal.c | 103 +++++++++++++++------ include/linux/nvmem-consumer.h | 8 ++ 6 files changed, 156 insertions(+), 31 deletions(-) -- 2.7.4
