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drm/panfrost: Ensure GPU quirks are always initialised

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The GPU 'CONFIG' registers used to work around hardware issues are
cleared on reset so need to be programmed every time the GPU is reset.
However panfrost_device_reset() failed to do this.

To avoid this in future instead move the call to
panfrost_gpu_init_quirks() to panfrost_gpu_power_on() so that the
regsiters are always programmed just before the cores are powered.

Fixes: f3ba91228e ("drm/panfrost: Add initial panfrost driver")
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200909122957.51667-1-steven.price@arm.com
This commit is contained in:
Steven Price 2020-09-09 13:29:57 +01:00
parent ac5037afef
commit 8c3c818c23
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/panfrost/panfrost_gpu.c
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@ -305,6 +305,8 @@ void panfrost_gpu_power_on(struct panfrost_device *pfdev)
int ret;
u32 val;
panfrost_gpu_init_quirks(pfdev);
/* Just turn on everything for now */
gpu_write(pfdev, L2_PWRON_LO, pfdev->features.l2_present);
ret = readl_relaxed_poll_timeout(pfdev->iomem + L2_READY_LO,
@ -357,7 +359,6 @@ int panfrost_gpu_init(struct panfrost_device *pfdev)
return err;
}
panfrost_gpu_init_quirks(pfdev);
panfrost_gpu_power_on(pfdev);
return 0;