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Make sure the USB PHY is disabled after use. Patch by Mihail Zenkov who has

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measured several milliamps power reduction from having the PHY disabled.

Change-Id: I29e55222eb50acf2023ac1113a90612029c580af
Reviewed-on: http://gerrit.rockbox.org/988
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>
Tested: Michael Giacomelli <giac2000@hotmail.com>
This commit is contained in:
Mihail Zenkov 2014-09-27 23:58:51 +02:00 • committed by Michael Giacomelli
parent 515a3c50fc
commit 02414bf286
2 changed files with 7 additions and 0 deletions
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1
docs/CREDITS
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@ -643,6 +643,7 @@ Yifu Huang
Jonathan Bettencourt Jonathan Bettencourt
Ilia Sergachev Ilia Sergachev
Nial Shui Nial Shui
Mihail Zenkov
The libmad team The libmad team
The wavpack team The wavpack team

6
firmware/target/arm/usb-s3c6400x.c
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@ -354,6 +354,12 @@ void usb_drv_exit(void)
CGU_USB = 0; CGU_USB = 0;
bitclr32(&CGU_PERI, CGU_USB_CLOCK_ENABLE); bitclr32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
/* reset USB_PHY to prevent power consumption */
CCU_SRC = CCU_SRC_USB_PHY_EN;
CCU_SRL = CCU_SRL_MAGIC_NUMBER;
CCU_SRL = 0;
} }
#elif CONFIG_CPU == S5L8701 || CONFIG_CPU == S5L8702 #elif CONFIG_CPU == S5L8701 || CONFIG_CPU == S5L8702
static void usb_reset(void) static void usb_reset(void)