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| author | Sven Peter <sven@svenpeter.dev> | 2022-04-29 17:26:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-09 15:44:21 +0200 |
| commit | b6b7ef932ae838209254f016ecf8862d716a5ced (patch) | |
| tree | f3774b5d9a20a9f42ce246649de86dc369ad0295 /drivers/nvmem/Kconfig | |
| parent | 7177042bdd1605b6c8d6b5c65a72f3e389690eaf (diff) | |
| download | lwn-b6b7ef932ae838209254f016ecf8862d716a5ced.tar.gz lwn-b6b7ef932ae838209254f016ecf8862d716a5ced.zip | |
nvmem: Add Apple eFuse driver
Apple SoCs contain eFuses used to store factory-programmed data such
as calibration values for the PCIe or the Type-C PHY. They are organized
as 32bit values exposed as MMIO.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220429162701.2222-6-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem/Kconfig')
| -rw-r--r-- | drivers/nvmem/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 555aa77a574d..6283e09cc1e9 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -324,4 +324,16 @@ config NVMEM_SUNPLUS_OCOTP This driver can also be built as a module. If so, the module will be called nvmem-sunplus-ocotp. +config NVMEM_APPLE_EFUSES + tristate "Apple eFuse support" + depends on ARCH_APPLE || COMPILE_TEST + default ARCH_APPLE + help + Say y here to enable support for reading eFuses on Apple SoCs + such as the M1. These are e.g. used to store factory programmed + calibration data required for the PCIe or the USB-C PHY. + + This driver can also be built as a module. If so, the module will + be called nvmem-apple-efuses. + endif |