lwn.git/drivers/soc/samsung, branch v6.9

soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs

2024-02-25T10:39:23+00:00

Some Exynos based SoCs like Tensor gs101 protect the PMU registers for security hardening reasons so that they are only write accessible in el3 via an SMC call. As most Exynos drivers that need to write PMU registers currently obtain a regmap via syscon (phys, pinctrl, watchdog). Support for the above usecase is implemented in this driver using a custom regmap similar to syscon to handle the SMC call. Platforms that don't secure PMU registers, get a mmio regmap like before. As regmaps abstract out the underlying register access changes to the leaf drivers are minimal. A new API exynos_get_pmu_regmap_by_phandle() is provided for leaf drivers that currently use syscon_regmap_lookup_by_phandle(). This also handles deferred probing. Tested-by: Sam Protsenko Tested-by: Alexey Klimov Reviewed-by: Sam Protsenko Signed-off-by: Peter Griffin Link: https://lore.kernel.org/r/20240220220613.797068-2-peter.griffin@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-chipid: add exynosautov920 SoC support

2023-11-15T12:42:50+00:00

Add EXYNOSAUTOV920 information to soc_ids tables. This SoC product id is "0x0A920000". Signed-off-by: Jaewon Kim Link: https://lore.kernel.org/r/20231115095609.39883-10-jaewon02.kim@samsung.com Signed-off-by: Krzysztof Kozlowski

Merge tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2023-11-02T00:46:51+00:00

Pull SoC driver updates from Arnd Bergmann: "The highlights for the driver support this time are - Qualcomm platforms gain support for the Qualcomm Secure Execution Environment firmware interface to access EFI variables on certain devices, and new features for multiple platform and firmware drivers. - Arm FF-A firmware support gains support for v1.1 specification features, in particular notification and memory transaction descriptor changes. - SCMI firmware support now support v3.2 features for clock and DVFS configuration and a new transport for Qualcomm platforms. - Minor cleanups and bugfixes are added to pretty much all the active platforms: qualcomm, broadcom, dove, ti-k3, rockchip, sifive, amlogic, atmel, tegra, aspeed, vexpress, mediatek, samsung and more. In particular, this contains portions of the treewide conversion to use __counted_by annotations and the device_get_match_data helper" * tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (156 commits) soc: qcom: pmic_glink_altmode: Print return value on error firmware: qcom: scm: remove unneeded 'extern' specifiers firmware: qcom: scm: add a missing forward declaration for struct device firmware: qcom: move Qualcomm code into its own directory soc: samsung: exynos-chipid: Convert to platform remove callback returning void soc: qcom: apr: Add __counted_by for struct apr_rx_buf and use struct_size() soc: qcom: pmic_glink: fix connector type to be DisplayPort soc: ti: k3-socinfo: Avoid overriding return value soc: ti: k3-socinfo: Fix typo in bitfield documentation soc: ti: knav_qmss_queue: Use device_get_match_data() firmware: ti_sci: Use device_get_match_data() firmware: qcom: qseecom: add missing include guards soc/pxa: ssp: Convert to platform remove callback returning void soc/mediatek: mtk-mmsys: Convert to platform remove callback returning void soc/mediatek: mtk-devapc: Convert to platform remove callback returning void soc/loongson: loongson2_guts: Convert to platform remove callback returning void soc/litex: litex_soc_ctrl: Convert to platform remove callback returning void soc/ixp4xx: ixp4xx-qmgr: Convert to platform remove callback returning void soc/ixp4xx: ixp4xx-npe: Convert to platform remove callback returning void soc/hisilicon: kunpeng_hccs: Convert to platform remove callback returning void ...

soc: samsung: exynos-chipid: Convert to platform remove callback returning void

2023-10-16T20:49:56+00:00

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230925095532.1984344-32-u.kleine-koenig@pengutronix.de Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20231016072911.27148-2-krzysztof.kozlowski@linaro.org Signed-off-by: Arnd Bergmann

pmdomain: samsung: Move Kconfig option to the pmdomain subsystem

2023-10-04T21:41:56+00:00

The Kconfig option belongs closer to the corresponding implementation, hence let's move it from the soc subsystem to the pmdomain subsystem. Cc: Krzysztof Kozlowski Cc: Alim Akhtar Cc: Signed-off-by: Ulf Hansson

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