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drm/rockchip: Check for fast link training before enabling psr
[ Upstream commit ad309284a52be47c8b3126c9376358bf381861bc ] Once we start shutting off the link during PSR, we're going to want fast training to work. If the display doesn't support fast training, don't enable psr. Changes in v2: - None Changes in v3: - None Changes in v4: - None Changes in v5: - None Link to v1: https://patchwork.freedesktop.org/patch/msgid/[email protected] Link to v2: https://patchwork.freedesktop.org/patch/msgid/[email protected] Link to v3: https://patchwork.freedesktop.org/patch/msgid/[email protected] Link to v4: https://patchwork.freedesktop.org/patch/msgid/[email protected] Cc: Zain Wang <[email protected]> Cc: Tomasz Figa <[email protected]> Tested-by: Heiko Stuebner <[email protected]> Reviewed-by: Heiko Stuebner <[email protected]> Signed-off-by: Sean Paul <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Signed-off-by: Sasha Levin <[email protected]>
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