openwrt/target/linux/bcm27xx/patches-4.19/950-0443-w1-w1-gpio-Make-GPIO-an-output-for-strong-pullup.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

28 lines
1005 B
Diff

From afea1f84cbda94c47ba4a8f84d16c4330e145a0a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 12 Jun 2019 17:15:05 +0100
Subject: [PATCH] w1: w1-gpio: Make GPIO an output for strong pullup
The logic to drive the data line high to implement a strong pullup
assumed that the pin was already an output - setting a value does
not change an input.
See: https://github.com/raspberrypi/firmware/issues/1143
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/w1/masters/w1-gpio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -33,7 +33,7 @@ static u8 w1_gpio_set_pullup(void *data,
* This will OVERRIDE open drain emulation and force-pull
* the line high for some time.
*/
- gpiod_set_raw_value(pdata->gpiod, 1);
+ gpiod_direction_output_raw(pdata->gpiod, 1);
msleep(pdata->pullup_duration);
/*
* This will simply set the line as input since we are doing