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brcm47xx: Enable USB power on WNDR3400v3

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WNDR3400v3 needs GPIO 21 pulled high to enable power to USB ports. Add a
kernel patch to do that.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
This commit is contained in:
Tuomas Tynkkynen 2018-08-19 22:11:50 +03:00 committed by Hauke Mehrtens
parent 79c233daa4
commit 5dd745588e
1 changed files with 39 additions and 0 deletions
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39
target/linux/brcm47xx/patches-4.14/161-MIPS-BCM47XX-Enable-USB-power-on-Netgear-WNDR3400v3.patch Normal file
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@ -0,0 +1,39 @@
From 17cb62255ef8f6b6ac270024204a8fa65537b333 Mon Sep 17 00:00:00 2001
From: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Date: Sun, 19 Aug 2018 21:23:14 +0300
Subject: [PATCH] MIPS: BCM47XX: Enable USB power on Netgear WNDR3400v3
Setting GPIO 21 high seems to be required to enable power to USB ports
on the WNDR3400v3. As there is already similar code for WNR3500L,
make the existing USB power GPIO code generic and use that.
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
---
arch/mips/bcm47xx/workarounds.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/arch/mips/bcm47xx/workarounds.c
+++ b/arch/mips/bcm47xx/workarounds.c
@@ -5,9 +5,8 @@
#include <bcm47xx_board.h>
#include <bcm47xx.h>
-static void __init bcm47xx_workarounds_netgear_wnr3500l(void)
+static void __init bcm47xx_workarounds_enable_usb_power(int usb_power)
{
- const int usb_power = 12;
int err;
err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
@@ -23,7 +22,10 @@ void __init bcm47xx_workarounds(void)
switch (board) {
case BCM47XX_BOARD_NETGEAR_WNR3500L:
- bcm47xx_workarounds_netgear_wnr3500l();
+ bcm47xx_workarounds_enable_usb_power(12);
+ break;
+ case BCM47XX_BOARD_NETGEAR_WNDR3400_V3:
+ bcm47xx_workarounds_enable_usb_power(21);
break;
default:
/* No workaround(s) needed */