From 587d28e0f51132d9d7c8ca9b6d284513d7bad0b4 Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Wed, 15 Nov 2017 11:03:26 +0800 Subject: [PATCH] ARM: dts: rockchip: fixed the 1GHz cpu frequency for rk3036-kylin As the cpu frequency is less than 816MHz, the HDMI display maybe probably cause a flower screen as below log[0]. And Kylin used the rk3036g series SoCs that the max cpu frequency supported the 1GHz, not 1.2GHz. In a word, keep the cpu frequency to 1GHz for kylin board. log[0]: [26.498843] rk_iommu 10118300.iommu: Enable stall request timed out, status: 0x000011 [26.528809] rk_iommu 10118300.iommu: Disable paging request timed out, status: 0x000011 [26.598849] rk_iommu 10118300.iommu: Enable stall request timed out, status: 0x000011 [26.607579] rockchip-vop 10118000.vop: Failed to attach iommu device [26.614916] rockchip-vop 10118000.vop: failed to attach dma mapping, -110 .. Change-Id: I8e1d4527b649d8857a9d80a121c10935a4cd1030 Signed-off-by: Caesar Wang --- arch/arm/boot/dts/rk3036-kylin.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/rk3036-kylin.dts b/arch/arm/boot/dts/rk3036-kylin.dts index b266ba1f5971..c5722a431d9e 100644 --- a/arch/arm/boot/dts/rk3036-kylin.dts +++ b/arch/arm/boot/dts/rk3036-kylin.dts @@ -125,6 +125,8 @@ &cpu0_opp_table { /delete-node/ opp-408000000; /delete-node/ opp-600000000; + /delete-node/ opp-816000000; + /delete-node/ opp-1200000000; }; &emac {