Sasha Levin
2020-Jul-14 14:39 UTC
[Nouveau] [PATCH AUTOSEL 4.19 12/13] drm/nouveau/i2c/g94-: increase NV_PMGR_DP_AUXCTL_TRANSACTREQ timeout
From: Ben Skeggs <bskeggs at redhat.com> [ Upstream commit 0156e76d388310a490aeb0f2fbb5b284ded3aecc ] Tegra TRM says worst-case reply time is 1216us, and this should fix some spurious timeouts that have been popping up. Signed-off-by: Ben Skeggs <bskeggs at redhat.com> Signed-off-by: Sasha Levin <sashal at kernel.org> --- drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c | 4 ++-- drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c index c8ab1b5741a3e..db7769cb33eba 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxg94.c @@ -118,10 +118,10 @@ g94_i2c_aux_xfer(struct nvkm_i2c_aux *obj, bool retry, if (retries) udelay(400); - /* transaction request, wait up to 1ms for it to complete */ + /* transaction request, wait up to 2ms for it to complete */ nvkm_wr32(device, 0x00e4e4 + base, 0x00010000 | ctrl); - timeout = 1000; + timeout = 2000; do { ctrl = nvkm_rd32(device, 0x00e4e4 + base); udelay(1); diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c index 7ef60895f43a7..edb6148cbca04 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm200.c @@ -118,10 +118,10 @@ gm200_i2c_aux_xfer(struct nvkm_i2c_aux *obj, bool retry, if (retries) udelay(400); - /* transaction request, wait up to 1ms for it to complete */ + /* transaction request, wait up to 2ms for it to complete */ nvkm_wr32(device, 0x00d954 + base, 0x00010000 | ctrl); - timeout = 1000; + timeout = 2000; do { ctrl = nvkm_rd32(device, 0x00d954 + base); udelay(1); -- 2.25.1
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