From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/gpu/drm/radeon/cypress_dpm.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/gpu/drm/radeon/cypress_dpm.c b/kernel/drivers/gpu/drm/radeon/cypress_dpm.c
index 35b177d..7120710 100644
--- a/kernel/drivers/gpu/drm/radeon/cypress_dpm.c
+++ b/kernel/drivers/gpu/drm/radeon/cypress_dpm.c
@@ -559,8 +559,12 @@
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;
--
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