diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 2aff2e6cf450..79a361867955 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -97,6 +97,11 @@ static void ast_detect_config_mode(struct drm_device *dev, u32 *scu_rev) jregd0 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); jregd1 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); if (!(jregd0 & 0x80) || !(jregd1 & 0x10)) { + /* Patch AST2500 */ + if (((pdev->revision & 0xF0) == 0x40) + && ((jregd0 & AST_VRAM_INIT_STATUS_MASK) == 0)) + ast_patch_ahb_2500(ast); + /* Double check it's actually working */ data = ast_read32(ast, 0xf004); if ((data != 0xFFFFFFFF) && (data != 0x00)) { |