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 5.17-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-5.17 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 @@ -471,7 +471,10 @@ 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-5.17/drm-ast-create-threshold-values-for-ast2600.patch