clk: mediatek: Add new clkmux register API

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On both MT8183 & MT6765, there add "set/clr" register for
each clkmux setting, and one update register to trigger value change.
It is designed to prevent read-modify-write racing issue.
The sw design need to add a new API to handle this hw change with
a new mtk_clk_mux/mtk_mux struct in new file "clk-mux.c", "clk-mux.h".

Signed-off-by: Owen Chen <owen.chen@mediatek.com>
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Reviewed-by: James Liao <jamesjj.liao@mediatek.com>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
[sboyd@kernel.org: Squash in flags=0 to silence warning]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

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Owen Chen 2019-03-05 13:05:39 +08:00 • committed by Stephen Boyd

parent be17ca6ac7

commit a3ae549917

3 changed files with 314 additions and 1 deletions

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3

drivers/clk/mediatek/Makefile

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223

drivers/clk/mediatek/clk-mux.c

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89

drivers/clk/mediatek/clk-mux.h

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