Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
phy: qcom-qmp-ufs: provide symbol clocks
Register three UFS symbol clocks (ufs_rx_symbol_0_clk_src,
ufs_rx_symbol_1_clk_src ufs_tx_symbol_0_clk_src). Register OF clock
provider to let other devices link these clocks through the DT.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221123104443.3415267-3-dmitry.baryshkov@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
authored by
Dmitry Baryshkov
and committed by
Vinod Koul
7bd7044f
521d431f
+57
+57
drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
+57
drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
···
1021
1021
return devm_clk_bulk_get(dev, num, qmp->clks);
1022
1022
}
1023
1023
1024
+
static void qmp_ufs_clk_release_provider(void *res)
1025
+
{
1026
+
of_clk_del_provider(res);
1027
+
}
1028
+
1029
+
#define UFS_SYMBOL_CLOCKS 3
1030
+
1031
+
static int qmp_ufs_register_clocks(struct qmp_ufs *qmp, struct device_node *np)
1032
+
{
1033
+
struct clk_hw_onecell_data *clk_data;
1034
+
struct clk_hw *hw;
1035
+
char name[64];
1036
+
int ret;
1037
+
1038
+
clk_data = devm_kzalloc(qmp->dev,
1039
+
struct_size(clk_data, hws, UFS_SYMBOL_CLOCKS),
1040
+
GFP_KERNEL);
1041
+
if (!clk_data)
1042
+
return -ENOMEM;
1043
+
1044
+
clk_data->num = UFS_SYMBOL_CLOCKS;
1045
+
1046
+
snprintf(name, sizeof(name), "%s::rx_symbol_0", dev_name(qmp->dev));
1047
+
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
1048
+
if (IS_ERR(hw))
1049
+
return PTR_ERR(hw);
1050
+
1051
+
clk_data->hws[0] = hw;
1052
+
1053
+
snprintf(name, sizeof(name), "%s::rx_symbol_1", dev_name(qmp->dev));
1054
+
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
1055
+
if (IS_ERR(hw))
1056
+
return PTR_ERR(hw);
1057
+
1058
+
clk_data->hws[1] = hw;
1059
+
1060
+
snprintf(name, sizeof(name), "%s::tx_symbol_0", dev_name(qmp->dev));
1061
+
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
1062
+
if (IS_ERR(hw))
1063
+
return PTR_ERR(hw);
1064
+
1065
+
clk_data->hws[2] = hw;
1066
+
1067
+
ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
1068
+
if (ret)
1069
+
return ret;
1070
+
1071
+
/*
1072
+
* Roll a devm action because the clock provider can be a child node.
1073
+
*/
1074
+
return devm_add_action_or_reset(qmp->dev, qmp_ufs_clk_release_provider, np);
1075
+
}
1076
+
1024
1077
static int qmp_ufs_parse_dt_legacy(struct qmp_ufs *qmp, struct device_node *np)
1025
1078
{
1026
1079
struct platform_device *pdev = to_platform_device(qmp->dev);
···
1183
1130
np = of_node_get(dev->of_node);
1184
1131
ret = qmp_ufs_parse_dt(qmp);
1185
1132
}
1133
+
if (ret)
1134
+
goto err_node_put;
1135
+
1136
+
ret = qmp_ufs_register_clocks(qmp, np);
1186
1137
if (ret)
1187
1138
goto err_node_put;
1188
1139