drm/g94-/disp/dp: take max pullup value across all lanes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

2 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c
index d4dfcde0a95d..05487cda84a8 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c
@@ -127,7 +127,9 @@ nv94_sor_dp_drv_ctl(struct nvkm_output_dp *outp, int ln, int vs, int pe, int pc)
 
         data[0] = nv_rd32(priv, 0x61c118 + loff) & ~(0x000000ff << shift);
         data[1] = nv_rd32(priv, 0x61c120 + loff) & ~(0x000000ff << shift);
-        data[2] = nv_rd32(priv, 0x61c130 + loff) & ~(0x0000ff00);
+        data[2] = nv_rd32(priv, 0x61c130 + loff);
+        if ((data[2] & 0x0000ff00) < (ocfg.tx_pu << 8) || ln == 0)
+                data[2] = (data[2] & ~0x0000ff00) | (ocfg.tx_pu << 8);
         nv_wr32(priv, 0x61c118 + loff, data[0] | (ocfg.dc << shift));
         nv_wr32(priv, 0x61c120 + loff, data[1] | (ocfg.pe << shift));
         nv_wr32(priv, 0x61c130 + loff, data[2] | (ocfg.tx_pu << 8));
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/sornvd0.c b/drivers/gpu/drm/nouveau/core/engine/disp/sornvd0.c
index 0055f869c507..97f0e9cd3d40 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/sornvd0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/sornvd0.c
@@ -105,7 +105,9 @@ nvd0_sor_dp_drv_ctl(struct nvkm_output_dp *outp, int ln, int vs, int pe, int pc)
 
         data[0] = nv_rd32(priv, 0x61c118 + loff) & ~(0x000000ff << shift);
         data[1] = nv_rd32(priv, 0x61c120 + loff) & ~(0x000000ff << shift);
-        data[2] = nv_rd32(priv, 0x61c130 + loff) & ~(0x0000ff00);
+        data[2] = nv_rd32(priv, 0x61c130 + loff);
+        if ((data[2] & 0x0000ff00) < (ocfg.tx_pu << 8) || ln == 0)
+                data[2] = (data[2] & ~0x0000ff00) | (ocfg.tx_pu << 8);
         nv_wr32(priv, 0x61c118 + loff, data[0] | (ocfg.dc << shift));
         nv_wr32(priv, 0x61c120 + loff, data[1] | (ocfg.pe << shift));
         nv_wr32(priv, 0x61c130 + loff, data[2] | (ocfg.tx_pu << 8));