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Message-Id: <20240627020059.163535-1-changhuang.liang@starfivetech.com>
Date: Wed, 26 Jun 2024 19:00:59 -0700
From: Changhuang Liang <changhuang.liang@...rfivetech.com>
To: Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>
Cc: Keith Zhao <keith.zhao@...rfivetech.com>,
Shengyang Chen <shengyang.chen@...rfivetech.com>,
Changhuang Liang <changhuang.liang@...rfivetech.com>,
linux-phy@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] phy: starfive: Correct the dphy configure process
We actually want to calculate the alignment values first, then
use the alignment value to look up the data from reg_configs[].
Fixes: d3ab79553308 ("phy: starfive: Add mipi dphy tx support")
Reviewed-by: Shengyang Chen <shengyang.chen@...rfivetech.com>
Signed-off-by: Changhuang Liang <changhuang.liang@...rfivetech.com>
---
drivers/phy/starfive/phy-jh7110-dphy-tx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/starfive/phy-jh7110-dphy-tx.c b/drivers/phy/starfive/phy-jh7110-dphy-tx.c
index 61b0da6096e5..c64d1c91b130 100644
--- a/drivers/phy/starfive/phy-jh7110-dphy-tx.c
+++ b/drivers/phy/starfive/phy-jh7110-dphy-tx.c
@@ -235,12 +235,14 @@ static int stf_dphy_configure(struct phy *phy, union phy_configure_opts *opts)
const struct stf_dphy_config *p = reg_configs;
unsigned long alignment = STF_DPHY_BITRATE_ALIGN;
u32 bitrate = opts->mipi_dphy.hs_clk_rate;
- u32 i = stf_dphy_get_config_index(bitrate);
u32 tmp;
+ u32 i;
if (bitrate % alignment)
bitrate += alignment - (bitrate % alignment);
+ i = stf_dphy_get_config_index(bitrate);
+
tmp = readl(dphy->topsys + STF_DPHY_APBIFSAIF_SYSCFG(100));
tmp &= ~STF_DPHY_REFCLK_IN_SEL;
tmp |= FIELD_PREP(STF_DPHY_REFCLK_IN_SEL, STF_DPHY_REFCLK_12M);
--
2.25.1
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