[v7,13/13] phy: cadence: Sierra: Enable pll_cmnlc and pll_cmnlc1 clocks

Commit Message

Kishon Vijay Abraham I March 19, 2021, 12:41 p.m. UTC

Get pll_cmnlc and pll_cmnlc1 optional clocks and enable them.
This will enable REFRCV/1 in case the pll_cmnlc/1 takes input
from REFRCV/1 respectively.

Signed-off-by: Kishon Vijay Abraham I <[e-mail]>
Reviewed-by: Swapnil Jakhade <[e-mail]>
---
 drivers/phy/cadence/phy-cadence-sierra.c | 40 ++++++++++++++++++++++--
 1 file changed, 37 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index 039ca10db59d..5c68e31c5939 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -768,6 +768,40 @@  static int cdns_sierra_phy_get_clocks(struct cdns_sierra_phy *sp,
 	return 0;
 }
 
+static int cdns_sierra_phy_enable_clocks(struct cdns_sierra_phy *sp)
+{
+	int ret;
+
+	ret = clk_prepare_enable(sp->input_clks[PHY_CLK]);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(sp->output_clks[CDNS_SIERRA_PLL_CMNLC]);
+	if (ret)
+		goto err_pll_cmnlc;
+
+	ret = clk_prepare_enable(sp->output_clks[CDNS_SIERRA_PLL_CMNLC1]);
+	if (ret)
+		goto err_pll_cmnlc1;
+
+	return 0;
+
+err_pll_cmnlc1:
+	clk_disable_unprepare(sp->output_clks[CDNS_SIERRA_PLL_CMNLC]);
+
+err_pll_cmnlc:
+	clk_disable_unprepare(sp->input_clks[PHY_CLK]);
+
+	return ret;
+}
+
+static void cdns_sierra_phy_disable_clocks(struct cdns_sierra_phy *sp)
+{
+	clk_disable_unprepare(sp->output_clks[CDNS_SIERRA_PLL_CMNLC1]);
+	clk_disable_unprepare(sp->output_clks[CDNS_SIERRA_PLL_CMNLC]);
+	clk_disable_unprepare(sp->input_clks[PHY_CLK]);
+}
+
 static int cdns_sierra_phy_get_resets(struct cdns_sierra_phy *sp,
 				      struct device *dev)
 {
@@ -848,7 +882,7 @@  static int cdns_sierra_phy_probe(struct platform_device *pdev)
 	if (ret)
 		goto unregister_clk;
 
-	ret = clk_prepare_enable(sp->input_clks[PHY_CLK]);
+	ret = cdns_sierra_phy_enable_clocks(sp);
 	if (ret)
 		goto unregister_clk;
 
@@ -925,7 +959,7 @@  static int cdns_sierra_phy_probe(struct platform_device *pdev)
 		reset_control_put(sp->phys[i].lnk_rst);
 	of_node_put(child);
 clk_disable:
-	clk_disable_unprepare(sp->input_clks[PHY_CLK]);
+	cdns_sierra_phy_disable_clocks(sp);
 	reset_control_assert(sp->apb_rst);
 unregister_clk:
 	cdns_sierra_clk_unregister(sp);
@@ -941,6 +975,7 @@  static int cdns_sierra_phy_remove(struct platform_device *pdev)
 	reset_control_assert(phy->apb_rst);
 	pm_runtime_disable(&pdev->dev);
 
+	cdns_sierra_phy_disable_clocks(phy);
 	/*
 	 * The device level resets will be put automatically.
 	 * Need to put the subnode resets here though.
@@ -950,7 +985,6 @@  static int cdns_sierra_phy_remove(struct platform_device *pdev)
 		reset_control_put(phy->phys[i].lnk_rst);
 	}
 
-	clk_disable_unprepare(phy->input_clks[PHY_CLK]);
 	cdns_sierra_clk_unregister(phy);
 
 	return 0;