aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/radeon/cypress_dpm.c
diff options
context:
space:
mode:
authorMark Brown <[email protected]>2023-07-17 06:12:31 +0100
committerMark Brown <[email protected]>2023-07-17 06:12:31 +0100
commit0791faebfe750292a8a842b64795a390ca4a3b51 (patch)
tree0e6095a5a0130398b0693bddfdc421c41eebda7c /drivers/gpu/drm/radeon/cypress_dpm.c
parente8bf1741c14eb8e4a4e1364d45aeeab66660ab9b (diff)
parentfdf0eaf11452d72945af31804e2a1048ee1b574c (diff)
ASoC: Merge v6.5-rc2
Get a similar baseline to my other branches, and fixes for people using the branch.
Diffstat (limited to 'drivers/gpu/drm/radeon/cypress_dpm.c')
-rw-r--r--drivers/gpu/drm/radeon/cypress_dpm.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/cypress_dpm.c b/drivers/gpu/drm/radeon/cypress_dpm.c
index fdddbbaecbb7..72a0768df00f 100644
--- a/drivers/gpu/drm/radeon/cypress_dpm.c
+++ b/drivers/gpu/drm/radeon/cypress_dpm.c
@@ -557,8 +557,12 @@ static int cypress_populate_mclk_value(struct radeon_device *rdev,
ASIC_INTERNAL_MEMORY_SS, vco_freq)) {
u32 reference_clock = rdev->clock.mpll.reference_freq;
u32 decoded_ref = rv740_get_decoded_reference_divider(dividers.ref_div);
- u32 clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
- u32 clk_v = ss.percentage *
+ u32 clk_s, clk_v;
+
+ if (!decoded_ref)
+ return -EINVAL;
+ clk_s = reference_clock * 5 / (decoded_ref * ss.rate);
+ clk_v = ss.percentage *
(0x4000 * dividers.whole_fb_div + 0x800 * dividers.frac_fb_div) / (clk_s * 625);
mpll_ss1 &= ~CLKV_MASK;