On 30/10/2020 12:36, Enric Balletbo i Serra wrote:
Dear all,
This is a new driver with the aim to deprecate the mtk-scpsys driver.
The problem with that driver is that, in order to support more Mediatek
SoCs you need to add some logic to handle properly the power-up
sequence of newer Mediatek SoCs, doesn't handle parent-child power
domains and need to hardcode all the clocks in the driver itself. The
result is that the driver is getting bigger and bigger every time a
new SoC needs to be supported.
All this information can be getted from a properly defined binding, so
can be cleaner and smaller, hence, we implemented a new driver. For
now, only MT8173 and MT8183 is supported but should be fairly easy to
add support for new SoCs.
All patches are pushed:
DT-bindings went to v5.10-next/pm-domains-stable as they are needed by both soc
and dts64 branch.
Regards,
Matthias
Three important notes:
1. This patch depends now on [1] to build correctly.
2. Support for MT8183 is not ready to land yet because has some
dependencies, i.e mmsys support is still missing.
3. Support for MT8192. I picked the patches [2] from Weiyi Lu and
adapted to this new series. I posted only for reference due that this
new version has some changes that affects that patchset.
Only patches from 1 to 9 are ready, the others are provided for reference and test.
[1] https://lore.kernel.org/patchwork/patch/1328096/
[2] https://patchwork.kernel.org/project/linux-mediatek/list/?series=368821
Best regards,
Enric
Enric Balletbo i Serra (5):
dt-bindings: power: Add bindings for the Mediatek SCPSYS power domains
controller
soc: mediatek: Add MediaTek SCPSYS power domains
arm64: dts: mediatek: Add mt8173 power domain controller
dt-bindings: power: Add MT8183 power domains
arm64: dts: mediatek: Add smi_common node for MT8183
Matthias Brugger (8):
soc: mediatek: pm-domains: Add bus protection protocol
soc: mediatek: pm_domains: Make bus protection generic
soc: mediatek: pm-domains: Add SMI block as bus protection block
soc: mediatek: pm-domains: Add extra sram control
soc: mediatek: pm-domains: Add subsystem clocks
soc: mediatek: pm-domains: Allow bus protection to ignore clear ack
soc: mediatek: pm-domains: Add support for mt8183
arm64: dts: mediatek: Add mt8183 power domains controller
Weiyi Lu (3):
dt-bindings: power: Add MT8192 power domains
soc: mediatek: pm-domains: Add default power off flag
soc: mediatek: pm-domains: Add support for mt8192
.../power/mediatek,power-controller.yaml | 293 +++++++++
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 164 +++--
arch/arm64/boot/dts/mediatek/mt8183.dtsi | 172 +++++
drivers/soc/mediatek/Kconfig | 12 +
drivers/soc/mediatek/Makefile | 1 +
drivers/soc/mediatek/mt8173-pm-domains.h | 94 +++
drivers/soc/mediatek/mt8183-pm-domains.h | 221 +++++++
drivers/soc/mediatek/mt8192-pm-domains.h | 292 +++++++++
drivers/soc/mediatek/mtk-infracfg.c | 5 -
drivers/soc/mediatek/mtk-pm-domains.c | 614 ++++++++++++++++++
drivers/soc/mediatek/mtk-pm-domains.h | 102 +++
include/dt-bindings/power/mt8183-power.h | 26 +
include/dt-bindings/power/mt8192-power.h | 32 +
include/linux/soc/mediatek/infracfg.h | 107 +++
14 files changed, 2081 insertions(+), 54 deletions(-)
create mode 100644 Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
create mode 100644 drivers/soc/mediatek/mt8173-pm-domains.h
create mode 100644 drivers/soc/mediatek/mt8183-pm-domains.h
create mode 100644 drivers/soc/mediatek/mt8192-pm-domains.h
create mode 100644 drivers/soc/mediatek/mtk-pm-domains.c
create mode 100644 drivers/soc/mediatek/mtk-pm-domains.h
create mode 100644 include/dt-bindings/power/mt8183-power.h
create mode 100644 include/dt-bindings/power/mt8192-power.h
