Re: [PATCH 2/6] drm/rockchip: vop: fix iommu page fault when resume

2017-08-03 Thread Sandy Huang
Hi mark, 在 2017/7/31 17:49, Mark Yao 写道: Iommu would get page fault with following path: vop_disable: 1, disable all windows and set vop config done 2, vop enter to standy, all windows not works, but their registers are not clean, when you read window's enable bit,

[PATCH 2/6] drm/rockchip: vop: fix iommu page fault when resume

2017-07-31 Thread Mark Yao
Iommu would get page fault with following path: vop_disable: 1, disable all windows and set vop config done 2, vop enter to standy, all windows not works, but their registers are not clean, when you read window's enable bit, may found the window is enable.