kernel/linux.git/drivers/pmdomain/mediatek, branch v6.13.6

pmdomain: mediatek: Add support for MT6735

2024-10-22T11:08:11+00:00

Add support for SCPSYS power domains of MT6735. All non-CPU power domains are added except for MD2 (C2K modem), which is left out due to issues with powering it on. Signed-off-by: Yassine Oudjana Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20241017085136.68053-3-y.oudjana@protonmail.com Signed-off-by: Ulf Hansson

pmdomain: mediatek: Use OF-specific regulator API to get power domain supply

2024-10-02T10:28:30+00:00

The MediaTek power domain driver contains a hack that assigns the device node of the power domain to the struct device of the power domain controller in order to use the devres regulator API. Now that there is a proper OF-specific regulator API, and even a devres version, replace the hack with proper code. This change is incompatible with incomplete device trees. Instead of assigning the dummy regulator in cases where the power domain requires a supply but the device tree does not provide one, the driver will just error out. This will be seen on the MT8390 EVK, which is missing supplies for the IMG_VCORE and CAM_VCORE domains. And likely all the MediaTek EVBs, which have no power domain supplies specified. This is however the correct behavior. If the power domain's supply is missing, then it should not work. Relying on other parts of the system to keep the unattached regulator enabled is likely to break in ways less easier to understand. Signed-off-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20240930044525.2043884-4-wenst@chromium.org Signed-off-by: Ulf Hansson

pmdomain: mediatek: make use of dev_err_cast_probe()

2024-09-13T10:48:34+00:00

Using dev_err_cast_probe() to simplify the code. Signed-off-by: Hongbo Li Reviewed-by: Matthias Brugger Link: https://lore.kernel.org/r/20240828121230.3696315-1-lihongbo22@huawei.com Signed-off-by: Ulf Hansson

pmdomain: mediatek: Add MT8188 buck isolation setting

2024-04-04T09:45:36+00:00

Add buck isolation setting to ADSP_AO, CAM_VCORE and IMG_VCORE power domains in MT8188 for proper buck isolation control in power domain on/off. Signed-off-by: Johnson Wang Signed-off-by: Fei Shao Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20240329044142.3095193-1-fshao@chromium.org Signed-off-by: Ulf Hansson

pmdomain: mediatek: scpsys: drop driver owner assignment

2024-04-04T09:44:54+00:00

Core in platform_driver_register() already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20240330211036.100956-1-krzysztof.kozlowski@linaro.org Signed-off-by: Ulf Hansson

pmdomain: mediatek: Use devm_platform_ioremap_resource() in init_scp()

2024-02-14T09:26:11+00:00

A wrapper function is available since the commit 7945f929f1a77a1c8887a97ca07f87626858ff42 ("drivers: provide devm_platform_ioremap_resource()"). * Thus reuse existing functionality instead of keeping duplicate source code. * Delete a local variable which became unnecessary with this refactoring. This issue was transformed by using the Coccinelle software. Signed-off-by: Markus Elfring Reviewed-by: Geert Uytterhoeven Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/6e397bf2-1d45-434f-8619-58a737a138e3@web.de Signed-off-by: Ulf Hansson

pmdomain: mediatek: fix race conditions with genpd

2024-01-23T12:19:15+00:00

If the power domains are registered first with genpd and *after that* the driver attempts to power them on in the probe sequence, then it is possible that a race condition occurs if genpd tries to power them on in the same time. The same is valid for powering them off before unregistering them from genpd. Attempt to fix race conditions by first removing the domains from genpd and *after that* powering down domains. Also first power up the domains and *after that* register them to genpd. Fixes: 59b644b01cf4 ("soc: mediatek: Add MediaTek SCPSYS power domains") Signed-off-by: Eugen Hristev Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20231225133615.78993-1-eugen.hristev@collabora.com Signed-off-by: Ulf Hansson

pmdomain: mediatek: Add support for MT8365

2023-10-17T09:41:42+00:00

Add the needed board data to support MT8365 SoC. Signed-off-by: Fabien Parent Signed-off-by: Markus Schneider-Pargmann Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Alexandre Mergnat Tested-by: Alexandre Mergnat Link: https://lore.kernel.org/r/20230918093751.1188668-9-msp@baylibre.com Signed-off-by: Ulf Hansson

pmdomain: mediatek: Add support for MTK_SCPD_STRICT_BUS_PROTECTION cap

2023-10-17T09:41:42+00:00

This adds support for MTK_SCPD_STRICT_BUS_PROTECTION capability. It is a strict bus protection policy that requires the bus protection to be disabled before accessing the bus. This is required by the mt8365, for the MM power domain. Signed-off-by: Alexandre Bailon Signed-off-by: Fabien Parent Signed-off-by: Markus Schneider-Pargmann Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Alexandre Mergnat Tested-by: Alexandre Mergnat Link: https://lore.kernel.org/r/20230918093751.1188668-8-msp@baylibre.com Signed-off-by: Ulf Hansson

pmdomain: mediatek: Add support for WAY_EN operations

2023-10-17T09:41:42+00:00

This updates the power domain to support WAY_EN operations. WAY_EN operations on mt8365 are using a different component to check for the acknowledgment, namely the infracfg-nao component. Also to enable a way it the bit needs to be cleared while disabling a way needs a bit to be set. To support these two operations two flags are added, BUS_PROT_INVERTED and BUS_PROT_STA_COMPONENT_INFRA_NAO. Additionally another regmap is created if the INFRA_NAO capability is set. This operation is required by the mt8365 for the MM power domain. Signed-off-by: Alexandre Bailon Signed-off-by: Fabien Parent Signed-off-by: Markus Schneider-Pargmann Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Alexandre Mergnat Tested-by: Alexandre Mergnat Link: https://lore.kernel.org/r/20230918093751.1188668-7-msp@baylibre.com Signed-off-by: Ulf Hansson