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| author |   Timothy Pearson <tpearson@raptorengineeringinc.com> | 2016-02-26 15:29:32 -0600 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2016-03-02 17:50:17 +1000 |
| commit | 2d02b8bdba322b527c5f5168ce1ca10c2d982a78 (patch) | |
| tree | 562afede287656dae0c54d491c7b76a6c067080b /drivers/gpu | |
| parent | drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM) (diff) | |
| download | linux-dev-2d02b8bdba322b527c5f5168ce1ca10c2d982a78.tar.xz linux-dev-2d02b8bdba322b527c5f5168ce1ca10c2d982a78.zip | |
drm/ast: Fix incorrect register check for DRAM width
During DRAM initialization on certain ASpeed devices, an incorrect
bit (bit 10) was checked in the "SDRAM Bus Width Status" register
to determine DRAM width.
Query bit 6 instead in accordance with the Aspeed AST2050 datasheet v1.05.
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 9759009d1da3..b1480acbb3c3 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -227,7 +227,7 @@ static int ast_get_dram_info(struct drm_device *dev) } while (ast_read32(ast, 0x10000) != 0x01); data = ast_read32(ast, 0x10004); - if (data & 0x400) + if (data & 0x40) ast->dram_bus_width = 16; else ast->dram_bus_width = 32; |