drm/gk104/clk: only touch divider for mode we'll be using

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

drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c

@@ -307,7 +307,6 @@ calc_clk(struct nve0_clock_priv *priv,
 		info->dsrc = src0;
 		if (div0) {
 			info->ddiv |= 0x80000000;
-			info->ddiv |= div0 << 8;
 			info->ddiv |= div0;
 		}
 		if (div1D) {
@@ -352,7 +351,7 @@ nve0_clock_prog_0(struct nve0_clock_priv *priv, int clk)
 {
 	struct nve0_clock_info *info = &priv->eng[clk];
 	if (!info->ssel) {
-		nv_mask(priv, 0x1371d0 + (clk * 0x04), 0x80003f3f, info->ddiv);
+		nv_mask(priv, 0x1371d0 + (clk * 0x04), 0x8000003f, info->ddiv);
 		nv_wr32(priv, 0x137160 + (clk * 0x04), info->dsrc);
 	}
 }
@@ -389,7 +388,10 @@ static void
 nve0_clock_prog_3(struct nve0_clock_priv *priv, int clk)
 {
 	struct nve0_clock_info *info = &priv->eng[clk];
-	nv_mask(priv, 0x137250 + (clk * 0x04), 0x00003f3f, info->mdiv);
+	if (info->ssel)
+		nv_mask(priv, 0x137250 + (clk * 0x04), 0x00003f00, info->mdiv);
+	else
+		nv_mask(priv, 0x137250 + (clk * 0x04), 0x0000003f, info->mdiv);
 }
 
 static void