lkml.org 
[lkml]   [2020]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/6] phy: stm32: ensure phy are no more active when removing the driver
Date
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@st.com>
---
drivers/phy/st/phy-stm32-usbphyc.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c
index 33367a325612..8b11d95b2c20 100644
--- a/drivers/phy/st/phy-stm32-usbphyc.c
+++ b/drivers/phy/st/phy-stm32-usbphyc.c
@@ -470,6 +470,12 @@ static int stm32_usbphyc_probe(struct platform_device *pdev)
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);

--
2.17.1
\
 
 \ /
  Last update: 2020-11-23 18:06    [W:0.507 / U:0.272 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site