From: Matthias Brugger <mbrug...@suse.com> Changes since v1: - add binding documentation - ddp: use regmap_update_bits - ddp: ignore EPROBE_DEFER on clock probing - mfd: delete mmsys_private - add Reviewed-by and Acked-by tags
--- MMSYS in Mediatek SoCs has some registers to control clock gates (which is used in the clk driver) and some registers to set the routing and enable the differnet blocks of the display subsystem. Up to now both drivers, clock and drm are probed with the same device tree compatible. But only the first driver get probed, which in effect breaks graphics on mt8173 and mt2701. This patch set introduces a new mfd device, which binds against the mmsys compatible and takes care of probing the needed devices. It was tested on the bananapi-r2 and the Acer R13 Chromebook. Matthias Brugger (10): dt-bindings: mediatek: mmsys: Add support for mfd drm/mediatek: Use regmap for register access mfd: mtk-mmsys: Add mmsys driver drm/mediatek: mt2701: switch to mfd probing. clk: mediatek: mt2701-mm: switch to mfd device mfd: mtk-mmsys: Add mt8173 nodes drm/mediatek: Add mfd support for mt8173 clk: mediatek: mt8173-mm: switch to mfd device drm: mediatek: Omit warning on probe defers MAINTAINERS: update Mediatek Soc entry .../bindings/arm/mediatek/mediatek,mmsys.txt | 2 - .../bindings/display/mediatek/mediatek,disp.txt | 2 +- .../devicetree/bindings/mfd/mediatek,mmsys.txt | 27 +++++++ MAINTAINERS | 2 + drivers/clk/mediatek/clk-mt2701-mm.c | 10 +-- drivers/clk/mediatek/clk-mt8173.c | 17 +++- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 +- drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 41 ++++------ drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 4 +- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 33 ++++---- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- drivers/mfd/Kconfig | 9 +++ drivers/mfd/Makefile | 2 + drivers/mfd/mtk-mmsys.c | 93 ++++++++++++++++++++++ 14 files changed, 189 insertions(+), 59 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt create mode 100644 drivers/mfd/mtk-mmsys.c -- 2.16.3
