Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
phy: uniphier-pcie: Set VCOPLL clamp mode in PHY register
Set VCOPLL clamp mode to mode 0 to avoid hardware unstable issue.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1635503947-18250-6-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
authored by
Kunihiko Hayashi
and committed by
Vinod Koul
25bba42f
1c1597c8
+5
+5
drivers/phy/socionext/phy-uniphier-pcie.c
+5
drivers/phy/socionext/phy-uniphier-pcie.c
···
51
51
#define PCL_PHY_R26 26
52
52
#define VCO_CTRL GENMASK(7, 4) /* Tx VCO adjustment value */
53
53
#define VCO_CTRL_INIT_VAL 5
54
+
#define PCL_PHY_R28 28
55
+
#define VCOPLL_CLMP GENMASK(3, 2) /* Tx VCOPLL clamp mode */
56
+
#define VCOPLL_CLMP_VAL 0
54
57
55
58
struct uniphier_pciephy_priv {
56
59
void __iomem *base;
···
161
158
FIELD_PREP(RX_EQ_ADJ, RX_EQ_ADJ_VAL));
162
159
uniphier_pciephy_set_param(priv, PCL_PHY_R26, VCO_CTRL,
163
160
FIELD_PREP(VCO_CTRL, VCO_CTRL_INIT_VAL));
161
+
uniphier_pciephy_set_param(priv, PCL_PHY_R28, VCOPLL_CLMP,
162
+
FIELD_PREP(VCOPLL_CLMP, VCOPLL_CLMP_VAL));
164
163
usleep_range(1, 10);
165
164
166
165
uniphier_pciephy_deassert(priv);