diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/805-display-0057-LF-794-4-gpu-cdn-mhdp-common-Increase-the-check-aliv.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/805-display-0057-LF-794-4-gpu-cdn-mhdp-common-Increase-the-check-aliv.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/805-display-0057-LF-794-4-gpu-cdn-mhdp-common-Increase-the-check-aliv.patch b/target/linux/layerscape/patches-5.4/805-display-0057-LF-794-4-gpu-cdn-mhdp-common-Increase-the-check-aliv.patch new file mode 100644 index 0000000000..734c5014fb --- /dev/null +++ b/target/linux/layerscape/patches-5.4/805-display-0057-LF-794-4-gpu-cdn-mhdp-common-Increase-the-check-aliv.patch @@ -0,0 +1,29 @@ +From 5a019410a0908d7a66a0526a47bed1883c02c5fe Mon Sep 17 00:00:00 2001 +From: Abel Vesa <abel.vesa@nxp.com> +Date: Thu, 9 Jan 2020 15:20:27 +0200 +Subject: [PATCH] LF-794-4 gpu: cdn: mhdp-common: Increase the check alive + timeout + +It seems that the firmware on i.MX8QM starts a little bit +after 20us after the ucpu has been relased (un-resetted). +Therefore, increase the max timeout for check alive to 50us. + +Signed-off-by: Abel Vesa <abel.vesa@nxp.com> +Reviewed-by: Sandor Yu <sandor.yu@nxp.com> +Acked-by: Wen He <wen.he_1@nxp.com> +Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> +--- + drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c ++++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp-common.c +@@ -1039,7 +1039,7 @@ EXPORT_SYMBOL(cdns_mhdp_read_hpd); + bool cdns_mhdp_check_alive(struct cdns_mhdp_device *mhdp) + { + u32 alive, newalive; +- u8 retries_left = 10; ++ u8 retries_left = 50; + + alive = cdns_mhdp_bus_read(mhdp, KEEP_ALIVE); + |