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path: root/drivers/soc/amlogic/meson-gx-pwrc-vpu.c
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2020-11-30soc: amlogic: replace devm_reset_control_array_get()Yejune Deng
devm_reset_control_array_get_exclusive() looks more readable Signed-off-by: Yejune Deng <yejune.deng@gmail.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/1605667700-16681-1-git-send-email-yejune.deng@gmail.com
2020-10-26soc: meson: enable building drivers as modulesKevin Hilman
Enable SoC drivers for 64-bit Amlogic SoCs to be built as modules. Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2020-09-24soc: amlogic: pm-domains: use always-on flagKevin Hilman
Rather than use a governor to keep these domains always-on, instead use the flag GENPD_FLAG_ALWAYS_ON. This has the same effect, but with much lower overhead since the governor path is not used at all. Signed-off-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200921222135.7145-1-khilman@baylibre.com
2019-04-16soc: amlogic: meson-gx-pwrc-vpu: Add support for G12ANeil Armstrong
The Amlogic G12A SoC has a very similar VPU Power Controller setup than the older GXBB, GXL & GXm SoCs. This patch adds the variant support for G12A. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2019-04-16soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmaskNeil Armstrong
The register bitmask to power on/off the VPU memories was incorectly set to 0x2 instead of 0x3. While still working, let's use the recommended vendor value instead. Fixes: 75fcb5ca4b46 ("soc: amlogic: add Meson GX VPU Domains driver") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2018-02-12soc: amlogic: meson-gx-pwrc-vpu: fix error on shutdown when domain is ↵Heiner Kallweit
powered off When operating the system headless headless, the domain is never powered on, leaving the clocks disabled. The shutdown function then tries to disable the already disabled clocks, resulting in errors. Therefore call meson_gx_pwrc_vpu_power_off() only if domain is powered on. This patch fixes the described issue on my system (Odorid-C2). Fixes: 339cd0ea0822 "soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloader" Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2018-02-12soc: amlogic: meson-gx-pwrc-vpu: don't print error message on probe deferralHeiner Kallweit
The error message may be misleading in case of probe deferral (happens on my Odroid-C2). Therefore don't print it in this case. Fixes: 75fcb5ca4b46 "soc: amlogic: add Meson GX VPU Domains driver" Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-11-09soc: amlogic: meson-gx-pwrc-vpu: fix power-off when powered by bootloaderNeil Armstrong
In the case the VPU power domain has been powered on by the bootloader and no driver are attached to this power domain, the genpd will power it off after a certain amount of time, but the clocks hasn't been enabled by the kernel itself and the power-off will trigger some faults. This patch enable the clocks to have a coherent state for an eventual poweroff and switches to the pm_domain_always_on_gov governor. Fixes: 75fcb5ca4b46 ("soc: amlogic: add Meson GX VPU Domains driver") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-10-29soc: amlogic: add Meson GX VPU Domains driverNeil Armstrong
The Video Processing Unit needs a specific Power Domain powering scheme this driver handles this as a PM Power Domain driver. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>