kernel/git/stable/linux.git/drivers/nvmem/Kconfig, branch master

nvmem: airoha: add ARM64 dependency

2026-07-31T12:15:53+00:00

The driver already depends on HAVE_ARM_SMCCC and ARCH_AIROHA, but both are available for 32-bit and 64-bit targets. However, the smccc invocation fails on thumb2 builds with clang: drivers/nvmem/airoha-smc-efuses.c:38:2: error: write to reserved register 'R7' 38 | arm_smccc_1_1_invoke(AIROHA_SMC_EFUSE_FID, | ^ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/arm/include/asm/opcodes.h:215:2: note: expanded from macro '__inst_arm_thumb32' 215 | __inst_thumb32(thumb_opcode) | ^ Since the driver is only used on the 64-bit an7581 soc, avoid this problem with a stricter dependency. Fixes: b7846af2e6ca ("nvmem: airoha: Add support for SMC eFUSE") Signed-off-by: Arnd Bergmann Reviewed-by: Christian Marangi Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260729094647.111468-12-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

eeprom: move nvmem EEPROM drivers to drivers/nvmem/

2026-07-31T12:15:53+00:00

For historical reasons EEPROM drivers have lived under drivers/misc/eeprom/. Also for historical reasons changes to most of them would go through the char-misc tree while some would be queued through the I2C tree. Over the years some of them have also been converted to using nvmem - the dedicated subsystem for non-volatile memory - while get_maintainer.pl does not Cc the maintainer of nvmem on patches changing them. Move the EEPROM drivers using nvmem under drivers/nvmem/ for consistency of the review process and path upstream. Reviewed-by: Wolfram Sang Acked-by: Greg Kroah-Hartman Acked-by: Arnd Bergmann Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260729094647.111468-11-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: cleanup dead code in Kconfig

2026-07-17T12:55:46+00:00

There is already an 'if NVMEM' condition wrapping NVMEM_RCAR_EFUSE, making the 'depends on' statement a duplicate dependency (dead code). I propose leaving the outer 'if NVMEM...endif' and removing the individual 'depends on' statement. This dead code was found by kconfirm, a static analysis tool for Kconfig. Signed-off-by: Julian Braha Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260530205333.117458-14-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: qcom: Unify user-visible "Qualcomm" name

2026-07-17T12:55:46+00:00

Various names for Qualcomm as a company are used in user-visible config options: QCOM, Qualcomm and Qualcomm Technologies. Switch to unified "Qualcomm" so it will be easier for users to identify the options when for example running menuconfig. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260530205333.117458-13-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: airoha: Add support for SMC eFUSE

2026-07-17T12:55:46+00:00

Add support for SMC eFUSE on AN7581 SoC. The SoC have 2 set of 2048 bits of eFUSE that are used to read calibration value for PCIe, Thermal, USB and other specific info of the SoC like revision and HW device present. eFuse value are taken by sending SMC command. ATF is responsible of validaing the data and rejecting reading protected data (like Private Key). In such case the SMC command will return non-zero value on a0 register. Signed-off-by: Christian Marangi Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260530205333.117458-12-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: lan9662-otp: add support for LAN969x

2026-07-17T12:55:46+00:00

Microchip LAN969x provides OTP with the same control logic, only the size differs as LAN969x has 16KB of OTP instead of 8KB like on LAN966x. Signed-off-by: Horatiu Vultur Signed-off-by: Robert Marko Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260530205333.117458-9-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: an8855: drop an unused Kconfig symbol

2026-01-26T15:40:33+00:00

MFD_AIROHA_AN8855 is referenced here but never defined, so drop it from the Kconfig file. Fixes: e2258cfd9b98 ("nvmem: an8855: Add support for Airoha AN8855 Switch EFUSE") Signed-off-by: Randy Dunlap Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260116170846.733558-4-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: Add driver for the eeprom in qnap-mcu controllers

2025-11-24T17:06:22+00:00

The qnap-mcu also has an eeprom connected to it, that contains some specific product-information like the mac addresses for the network interfaces. Add a nvmem driver for it. Signed-off-by: Heiko Stuebner Acked-by: Srinivas Kandagatla Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20251114110636.143268-4-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: an8855: Add support for Airoha AN8855 Switch EFUSE

2025-09-12T13:49:03+00:00

Add support for Airoha AN8855 Switch EFUSE. These EFUSE might be used for calibration data for the internal switch PHYs. Signed-off-by: Christian Marangi Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250912131415.303407-6-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: s32g-ocotp: Add driver for S32G OCOTP

2025-09-12T13:49:03+00:00

Provide access to the On Chip One-Time Programmable Controller (OCOTP) pages on the NXP S32G platform. Signed-off-by: Ciprian Costea Co-developed-by: Ghennadi Procopciuc Signed-off-by: Ghennadi Procopciuc Co-developed-by: Larisa Grigore Signed-off-by: Larisa Grigore Signed-off-by: Dan Carpenter Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250912131415.303407-3-srini@kernel.org Signed-off-by: Greg Kroah-Hartman