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30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
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From 5a019410a0908d7a66a0526a47bed1883c02c5fe Mon Sep 17 00:00:00 2001
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From: Abel Vesa <abel.vesa@nxp.com>
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Date: Thu, 9 Jan 2020 15:20:27 +0200
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Subject: [PATCH] LF-794-4 gpu: cdn: mhdp-common: Increase the check alive
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timeout
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It seems that the firmware on i.MX8QM starts a little bit
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after 20us after the ucpu has been relased (un-resetted).
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Therefore, increase the max timeout for check alive to 50us.
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Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
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Reviewed-by: Sandor Yu <sandor.yu@nxp.com>
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Acked-by: Wen He <wen.he_1@nxp.com>
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Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
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---
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drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c
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+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c
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@@ -1039,7 +1039,7 @@ EXPORT_SYMBOL(cdns_mhdp_read_hpd);
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bool cdns_mhdp_check_alive(struct cdns_mhdp_device *mhdp)
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{
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u32 alive, newalive;
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- u8 retries_left = 10;
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+ u8 retries_left = 50;
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alive = cdns_mhdp_bus_read(mhdp, KEEP_ALIVE);
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