This is a note to let you know that I've just added the patch titled
drm/ast: Create threshold values for AST2600
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-ast-create-threshold-values-for-ast2600.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bcc77411e8a65929655cef7b63a36000724cdc4b Mon Sep 17 00:00:00 2001
From: KuoHsiang Chou <kuohsiang_chou@xxxxxxxxxxxxxx>
Date: Mon, 17 Jan 2022 16:36:43 +0800
Subject: drm/ast: Create threshold values for AST2600
From: KuoHsiang Chou <kuohsiang_chou@xxxxxxxxxxxxxx>
commit bcc77411e8a65929655cef7b63a36000724cdc4b upstream.
The threshold value is used for AST2600 only.
Signed-off-by: KuoHsiang Chou <kuohsiang_chou@xxxxxxxxxxxxxx>
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220117083643.41493-1-kuohsiang_chou@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/ast/ast_mode.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -474,7 +474,10 @@ static void ast_set_color_reg(struct ast
static void ast_set_crtthd_reg(struct ast_private *ast)
{
/* Set Threshold */
- if (ast->chip == AST2300 || ast->chip == AST2400 ||
+ 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);
Patches currently in stable-queue which might be from kuohsiang_chou@xxxxxxxxxxxxxx are
queue-5.15/drm-ast-create-threshold-values-for-ast2600.patch
