1 files changed, 15 insertions, 5 deletions

diff --git a/src/drivers/aspeed/common/ast_mode.c b/src/drivers/aspeed/common/ast_mode.c
index 3ab91c228e..96504579a4 100644
--- a/src/drivers/aspeed/common/ast_mode.c
+++ b/src/drivers/aspeed/common/ast_mode.c
@@ -247,7 +247,7 @@ static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mod
 	u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
 	u16 temp, precache = 0;
 
-	if ((ast->chip == AST2500) &&
+	if ((ast->chip == AST2500 || ast->chip == AST2600) &&
 	    (vbios_mode->enh_table->flags & AST2500PreCatchCRT))
 		precache = 40;
 
@@ -288,6 +288,12 @@ static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mod
 	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAC, 0x00, jregAC);
 	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAD, 0x00, jregAD);
 
+	// Workaround for HSync Time non octave pixels (1920x1080@60Hz HSync 44 pixels);
+	if ((ast->chip == AST2600) && (mode->crtc_vdisplay == 1080))
+		ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xFC, 0xFD, 0x02);
+	else
+		ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xFC, 0xFD, 0x00);
+
 	/* vert timings */
 	temp = (mode->crtc_vtotal) - 2;
 	if (temp & 0x100)
@@ -367,7 +373,7 @@ static void ast_set_dclk_reg(struct drm_device *dev, struct drm_display_mode *mo
 	struct ast_private *ast = dev->dev_private;
 	const struct ast_vbios_dclk_info *clk_info;
 
-	if (ast->chip == AST2500)
+	if ((ast->chip == AST2500) || (ast->chip == AST2600))
 		clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
 	else
 		clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
@@ -411,8 +417,11 @@ static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode *mode
 	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa8, 0xfd, jregA8);
 
 	/* Set Threshold */
-	if (ast->chip == AST2300 || ast->chip == AST2400 ||
-	    ast->chip == AST2500) {
+	if (ast->chip == AST2600) {
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0xe0);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0xa0);
+	} else if (ast->chip == AST2300 || ast->chip == AST2400 ||
+		 ast->chip == AST2500) {
 		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x78);
 		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x60);
 	} else if (ast->chip == AST2100 ||
@@ -529,7 +538,8 @@ enum drm_mode_status ast_mode_valid(struct drm_connector *connector,
 
 		if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
 		    (ast->chip == AST2300) || (ast->chip == AST2400) ||
-		    (ast->chip == AST2500) || (ast->chip == AST1180)) {
+		    (ast->chip == AST2500) || (ast->chip == AST1180) ||
+		    (ast->chip == AST2600)) {
 			if ((hdisplay == 1920) && (vdisplay == 1080))
 				return MODE_OK;