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phy: qcom-qmp-ufs: provide symbol clocks

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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>
This commit is contained in:
Dmitry Baryshkov 2022-11-23 12:44:41 +02:00 committed by Vinod Koul
parent 521d431fca
commit 7bd7044fcd
1 changed files with 57 additions and 0 deletions
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57
drivers/phy/qualcomm/phy-qcom-qmp-ufs.c
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@ -1021,6 +1021,59 @@ static int qmp_ufs_clk_init(struct qmp_ufs *qmp)
return devm_clk_bulk_get(dev, num, qmp->clks);
}
static void qmp_ufs_clk_release_provider(void *res)
{
of_clk_del_provider(res);
}
#define UFS_SYMBOL_CLOCKS 3
static int qmp_ufs_register_clocks(struct qmp_ufs *qmp, struct device_node *np)
{
struct clk_hw_onecell_data *clk_data;
struct clk_hw *hw;
char name[64];
int ret;
clk_data = devm_kzalloc(qmp->dev,
struct_size(clk_data, hws, UFS_SYMBOL_CLOCKS),
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
clk_data->num = UFS_SYMBOL_CLOCKS;
snprintf(name, sizeof(name), "%s::rx_symbol_0", dev_name(qmp->dev));
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
if (IS_ERR(hw))
return PTR_ERR(hw);
clk_data->hws[0] = hw;
snprintf(name, sizeof(name), "%s::rx_symbol_1", dev_name(qmp->dev));
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
if (IS_ERR(hw))
return PTR_ERR(hw);
clk_data->hws[1] = hw;
snprintf(name, sizeof(name), "%s::tx_symbol_0", dev_name(qmp->dev));
hw = devm_clk_hw_register_fixed_rate(qmp->dev, name, NULL, 0, 0);
if (IS_ERR(hw))
return PTR_ERR(hw);
clk_data->hws[2] = hw;
ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
if (ret)
return ret;
/*
* Roll a devm action because the clock provider can be a child node.
*/
return devm_add_action_or_reset(qmp->dev, qmp_ufs_clk_release_provider, np);
}
static int qmp_ufs_parse_dt_legacy(struct qmp_ufs *qmp, struct device_node *np)
{
struct platform_device *pdev = to_platform_device(qmp->dev);
@ -1133,6 +1186,10 @@ static int qmp_ufs_probe(struct platform_device *pdev)
if (ret)
goto err_node_put;
ret = qmp_ufs_register_clocks(qmp, np);
if (ret)
goto err_node_put;
qmp->phy = devm_phy_create(dev, np, &qcom_qmp_ufs_phy_ops);
if (IS_ERR(qmp->phy)) {
ret = PTR_ERR(qmp->phy);