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dt-bindings: Add doc about rk3308 General Register Files
RK3308 GRF is divided into four sections: GRF, SGRF, DETECTGRF, COREGRF. This patch add documentation for it. Signed-off-by: Andy Yan <andy.yan@rock-chips.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20191021084555.28356-1-andy.yan@rock-chips.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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@ -10,6 +10,12 @@ From RK3368 SoCs, the GRF is divided into two sections,
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On RK3328 SoCs, the GRF adds a section for USB2PHYGRF,
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ON RK3308 SoC, the GRF is divided into four sections:
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- GRF, used for general non-secure system,
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- SGRF, used for general secure system,
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- DETECTGRF, used for audio codec system,
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- COREGRF, used for pvtm,
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Required Properties:
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- compatible: GRF should be one of the following:
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@ -19,10 +25,15 @@ Required Properties:
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- "rockchip,rk3188-grf", "syscon": for rk3188
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- "rockchip,rk3228-grf", "syscon": for rk3228
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- "rockchip,rk3288-grf", "syscon": for rk3288
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- "rockchip,rk3308-grf", "syscon": for rk3308
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- "rockchip,rk3328-grf", "syscon": for rk3328
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- "rockchip,rk3368-grf", "syscon": for rk3368
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- "rockchip,rk3399-grf", "syscon": for rk3399
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- "rockchip,rv1108-grf", "syscon": for rv1108
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- compatible: DETECTGRF should be one of the following:
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- "rockchip,rk3308-detect-grf", "syscon": for rk3308
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- compatilbe: COREGRF should be one of the following:
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- "rockchip,rk3308-core-grf", "syscon": for rk3308
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- compatible: PMUGRF should be one of the following:
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- "rockchip,px30-pmugrf", "syscon": for px30
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- "rockchip,rk3368-pmugrf", "syscon": for rk3368
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