kernel/linux.git/drivers/soc/samsung, branch v6.6.134

soc: samsung: exynos-chipid: Add NULL pointer check in exynos_chipid_probe()

2025-04-25T08:45:27+00:00

commit c8222ef6cf29dd7cad21643228f96535cc02b327 upstream. soc_dev_attr->revision could be NULL, thus, a pointer check is added to prevent potential NULL pointer dereference. This is similar to the fix in commit 3027e7b15b02 ("ice: Fix some null pointer dereference issues in ice_ptp.c"). This issue is found by our static analysis tool. Signed-off-by: Chenyuan Yang Link: https://lore.kernel.org/r/20250212213518.69432-1-chenyuan0y@gmail.com Fixes: 3253b7b7cd44 ("soc: samsung: Add exynos chipid driver support") Cc: Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman

Merge tag 'samsung-drivers-6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/drivers

2023-08-12T10:09:43+00:00

Samsung SoC driver changes for v6.6 Minor cleanup of headers and maintainer entries for Samsung SoC drivers. * tag 'samsung-drivers-6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: MAINTAINERS: mfd: Un-support Maxim and Samsung PMIC drivers MAINTAINERS: samsung: Un-support cpuidle and clock drivers soc: samsung: Explicitly include correct DT includes Link: https://lore.kernel.org/r/20230810151250.220202-1-krzysztof.kozlowski@linaro.org Signed-off-by: Arnd Bergmann

soc: samsung: Explicitly include correct DT includes

2023-07-20T09:30:09+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Acked-by: Alim Akhtar Link: https://lore.kernel.org/r/20230714175147.4068046-1-robh@kernel.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: Move power-domain driver to the genpd dir

2023-07-14T08:40:56+00:00

To simplify with maintenance let's move the samsung power-domain driver to the new genpd directory. Going forward, patches are intended to be managed through a separate git tree, according to MAINTAINERS. Cc: Krzysztof Kozlowski Cc: Alim Akhtar Cc: Reviewed-by: Krzysztof Kozlowski Acked-by: Marek Szyprowski Signed-off-by: Ulf Hansson

soc: samsung: exynos-pmu: Re-introduce Exynos4212 support

2023-05-09T17:49:37+00:00

Support for the Exynos4212 SoC was originally dropped as there were no boards using it. We will be adding a device that uses it, so add it back. This reverts commit c40610198f35e8264f9175dafe74db6288a07eda. Signed-off-by: Artur Weber Link: https://lore.kernel.org/r/20230501195525.6268-5-aweber.kernel@gmail.com Signed-off-by: Krzysztof Kozlowski

soc: s3c: remove pm-debug hack

2023-01-16T08:26:06+00:00

CONFIG_SAMSUNG_PM_DEBUG was only used on s3c24xx because of the DEBUG_S3C24XX_UART dependency. Since s3c24xx is now gone, and nobody ever noticed this option being missing from s3c64xx, it can be safely removed as well. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Arnd Bergmann

ARM: s3c: remove all s3c24xx support

2023-01-16T08:26:05+00:00

The platform was deprecated in commit 6a5e69c7ddea ("ARM: s3c: mark as deprecated and schedule removal") and can be removed. This includes all files that are exclusively for s3c24xx and not shared with s3c64xx, as well as the glue logic in Kconfig and the maintainer file entries. Cc: Arnaud Patard Cc: Ben Dooks Cc: Christer Weinigel Cc: Guillaume GOURAT Cc: Heiko Stuebner Cc: Simtec Linux Team Cc: openmoko-kernel@lists.openmoko.org Acked-by: Heiko Stuebner Acked-by: Krzysztof Kozlowski Signed-off-by: Arnd Bergmann

MAINTAINERS: update Krzysztof Kozlowski's email

2022-03-07T22:46:03+00:00

Use Krzysztof Kozlowski's @kernel.org account in maintainer entries. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220307172805.156760-1-krzysztof.kozlowski@canonical.com' Signed-off-by: Arnd Bergmann

soc: samsung: Fix typo in CONFIG_EXYNOS_USI description

2022-01-23T17:05:41+00:00

The proper name is Exynos Auto V9, not V0. It was the typo slipped in unnoticed, fix it. Fixes: b603377e408f ("soc: samsung: Add USI driver") Signed-off-by: Sam Protsenko Reviewed-by: Chanho Park Link: https://lore.kernel.org/r/20220114144606.24358-1-semen.protsenko@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: Add USI driver

2021-12-18T10:55:56+00:00

USIv2 IP-core is found on modern ARM64 Exynos SoCs (like Exynos850) and provides selectable serial protocol (one of: UART, SPI, I2C). USIv2 registers usually reside in the same register map as a particular underlying protocol it implements, but have some particular offset. E.g. on Exynos850 the USI_UART has 0x13820000 base address, where UART registers have 0x00..0x40 offsets, and USI registers have 0xc0..0xdc offsets. Desired protocol can be chosen via SW_CONF register from System Register block of the same domain as USI. Before starting to use a particular protocol, USIv2 must be configured properly: 1. Select protocol to be used via System Register 2. Clear "reset" flag in USI_CON 3. Configure HWACG behavior (e.g. for UART Rx the HWACG must be disabled, so that the IP clock is not gated automatically); this is done using USI_OPTION register 4. Keep both USI clocks (PCLK and IPCLK) running during USI registers modification This driver implements the above behavior. Of course, USIv2 driver should be probed before UART/I2C/SPI drivers. It can be achieved by embedding UART/I2C/SPI nodes inside of the USI node (in Device Tree); driver then walks underlying nodes and instantiates those. Driver also handles USI configuration on PM resume, as register contents can be lost during CPU suspend. This driver is designed with different USI versions in mind. So it should be relatively easy to add new USI revisions to it later. Signed-off-by: Sam Protsenko Link: https://lore.kernel.org/r/20211204195757.8600-3-semen.protsenko@linaro.org Tested-by: Chanho Park Signed-off-by: Krzysztof Kozlowski