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phy: stm32: ensure phy are no more active when removing the driver
author
Amelie Delaunay
<amelie.delaunay@foss.st.com>
Tue, 5 Jan 2021 09:05:24 +0000
(10:05 +0100)
committer
Vinod Koul
<vkoul@kernel.org>
Wed, 13 Jan 2021 15:10:21 +0000
(20:40 +0530)
To ensure a good balancing of regulators, and allow PLL disabling when the
driver is removed, call stm32_usbphyc_phy_exit on each ports to set phys
inactive and disable PLL.
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link:
https://lore.kernel.org/r/20210105090525.23164-6-amelie.delaunay@foss.st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/phy/st/phy-stm32-usbphyc.c
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diff --git
a/drivers/phy/st/phy-stm32-usbphyc.c
b/drivers/phy/st/phy-stm32-usbphyc.c
index
33367a3
..
8b11d95
100644
(file)
--- a/
drivers/phy/st/phy-stm32-usbphyc.c
+++ b/
drivers/phy/st/phy-stm32-usbphyc.c
@@
-470,6
+470,12
@@
clk_disable:
static int stm32_usbphyc_remove(struct platform_device *pdev)
{
struct stm32_usbphyc *usbphyc = dev_get_drvdata(&pdev->dev);
+ int port;
+
+ /* Ensure PHYs are not active, to allow PLL disabling */
+ for (port = 0; port < usbphyc->nphys; port++)
+ if (usbphyc->phys[port]->active)
+ stm32_usbphyc_phy_exit(usbphyc->phys[port]->phy);
clk_disable_unprepare(usbphyc->clk);