linux-toradex.git/drivers/pmdomain/sunxi, branch master Linux kernel for Apalis and Colibri modules pmdomain: sunxi: Add support for A733 to Allwinner PCK600 driver 2026-04-01T11:12:11+00:00 Yuanshen Cao alex.caoys@gmail.com 2026-03-05T03:34:08+00:00 a46e905cd14a0a82b6f1fbf2f720fe5f13755050 The Allwinner A733 PCK600, similar to A523 PCK600, is likely a customized version of ARM PCK-600 power controller. It shares the same BSP driver with A523. According to the BSP provided by Radxa, unlike A523, it doesn't require reset, as well as a different pair of delay values. Make reset optional in the sunxi pck600 driver and add support for A733. Signed-off-by: Yuanshen Cao <alex.caoys@gmail.com> Reviewed-by: Chen-Yu Tsai <wens@kernel.org> # matched against BSP driver Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
The Allwinner A733 PCK600, similar to A523 PCK600, is likely a
customized version of ARM PCK-600 power controller. It shares the same
BSP driver with A523. According to the BSP provided by Radxa, unlike
A523, it doesn't require reset, as well as a different pair of delay
values.

Make reset optional in the sunxi pck600 driver and add support
for A733.

Signed-off-by: Yuanshen Cao <alex.caoys@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@kernel.org> # matched against BSP driver
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: sun20i-ppu: change to tristate and enable for ARCH_SUNXI 2025-07-15T14:04:55+00:00 Chen-Yu Tsai wens@csie.org 2025-07-12T07:40:20+00:00 73254f49164f12ca6e0a849883953b91c4e168eb There is no reason why the sun20i-ppu cannot be built as a module. So change it to tristate. Also enable it by default for ARCH_SUNXI since this driver is required for some peripherals to work, and update the help text to reflect this requirement. This aligns it with the new PCK-600 driver. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20250712074021.805953-5-wens@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
There is no reason why the sun20i-ppu cannot be built as a module. So
change it to tristate.

Also enable it by default for ARCH_SUNXI since this driver is required
for some peripherals to work, and update the help text to reflect this
requirement.

This aligns it with the new PCK-600 driver.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20250712074021.805953-5-wens@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: add driver for Allwinner A523's PCK-600 power controller 2025-07-15T14:04:55+00:00 Chen-Yu Tsai wens@csie.org 2025-07-12T07:40:19+00:00 76e4310115ca66d28166cf94bb1edf37a750363a Allwinner A523 family has a second power controller, named PCK-600 in the datasheets and BSP. It is likely based on ARM's PCK-600 hardware block, with some additional delay controls. The only documentation for this hardware is the BSP driver. The standard registers defined in ARM's Power Policy Unit Architecture Specification line up. Some extra delay controls are found in the reserved range of registers. Add a driver for this power controller. Delay control register values and power domain names are from the BSP driver. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20250712074021.805953-4-wens@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
Allwinner A523 family has a second power controller, named PCK-600 in
the datasheets and BSP. It is likely based on ARM's PCK-600 hardware
block, with some additional delay controls. The only documentation for
this hardware is the BSP driver. The standard registers defined in ARM's
Power Policy Unit Architecture Specification line up. Some extra delay
controls are found in the reserved range of registers.

Add a driver for this power controller. Delay control register values
and power domain names are from the BSP driver.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20250712074021.805953-4-wens@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: sun20i-ppu: add A523 support 2025-07-15T14:04:55+00:00 Chen-Yu Tsai wens@csie.org 2025-07-12T07:40:18+00:00 982aaa683d20804c21c6b8b1ca295ae531c91df5 A523 has a PPU like the one in the Allwinner D1 SoC. Add a compatible entry and a list of power domain names for it. Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20250712074021.805953-3-wens@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
A523 has a PPU like the one in the Allwinner D1 SoC.

Add a compatible entry and a list of power domain names for it.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20250712074021.805953-3-wens@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: add H6 PRCM PPU driver 2025-04-24T15:47:16+00:00 Andre Przywara andre.przywara@arm.com 2025-04-16T22:48:37+00:00 ca677196a91f6869169ef31252c00ceec6ac0754 The Allwinner Power Reset Clock Management (RPCM) block contains a few bits that control some power domains. The most prominent one is the one for the Mali GPU. On the Allwinner H6 this domain is enabled at reset, so we didn't care about it so far, but the H616 defaults to it being disabled. Add a power domain driver for those bits. Some BSP code snippets and some spare documentation describe three bits, slightly different between the H6 and H616, so add three power domains for each SoC, connected to their compatible string. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Link: https://lore.kernel.org/r/20250416224839.9840-3-andre.przywara@arm.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
The Allwinner Power Reset Clock Management (RPCM) block contains a few
bits that control some power domains. The most prominent one is the one
for the Mali GPU. On the Allwinner H6 this domain is enabled at reset, so
we didn't care about it so far, but the H616 defaults to it being disabled.

Add a power domain driver for those bits. Some BSP code snippets and
some spare documentation describe three bits, slightly different between
the H6 and H616, so add three power domains for each SoC, connected to
their compatible string.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20250416224839.9840-3-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: add V853 ppu support 2025-02-14T11:23:05+00:00 Andras Szemzo szemzo.andras@gmail.com 2025-02-05T12:52:21+00:00 c41bac728aea8a85083a71eb423894541b86b702 V853 has a similar ppu like Allwinner D1, add compatible and the available pd names. Signed-off-by: Andras Szemzo <szemzo.andras@gmail.com> Link: https://lore.kernel.org/r/20250205125225.1152849-7-szemzo.andras@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
V853 has a similar ppu like Allwinner D1, add compatible and the available pd names.

Signed-off-by: Andras Szemzo <szemzo.andras@gmail.com>
Link: https://lore.kernel.org/r/20250205125225.1152849-7-szemzo.andras@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: sunxi: Move Kconfig option to the pmdomain subsystem 2023-10-04T21:41:56+00:00 Ulf Hansson ulf.hansson@linaro.org 2023-09-12T12:09:39+00:00 fe78050a002524f332d19bca8127de6fdbdad32b The Kconfig option belongs closer to the corresponding implementation, hence let's move it from the soc subsystem to the pmdomain subsystem. Cc: Chen-Yu Tsai <wens@csie.org> Cc: Jernej Skrabec <jernej.skrabec@gmail.com> Cc: Samuel Holland <samuel@sholland.org> Cc: <linux-sunxi@lists.linux.dev> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 
The Kconfig option belongs closer to the corresponding implementation,
hence let's move it from the soc subsystem to the pmdomain subsystem.

Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: <linux-sunxi@lists.linux.dev>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
pmdomain: Rename the genpd subsystem to pmdomain 2023-09-13T09:09:21+00:00 Ulf Hansson ulf.hansson@linaro.org 2023-09-12T22:11:27+00:00 e2ad626f8f409899baf1bf192d0533a851128b19 It has been pointed out that naming a subsystem "genpd" isn't very self-explanatory and the acronym itself that means Generic PM Domain, is known only by a limited group of people. In a way to improve the situation, let's rename the subsystem to pmdomain, which ideally should indicate that this is about so called Power Domains or "PM domains" as we often also use within the Linux Kernel terminology. Suggested-by: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org 
It has been pointed out that naming a subsystem "genpd" isn't very
self-explanatory and the acronym itself that means Generic PM Domain, is
known only by a limited group of people.

In a way to improve the situation, let's rename the subsystem to pmdomain,
which ideally should indicate that this is about so called Power Domains or
"PM domains" as we often also use within the Linux Kernel terminology.

Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org