Re: [PATCH v2] pinctrl: bcm2835: Start GPIO numeration at zero

From: Stephen Warren
Date: Mon Oct 27 2014 - 18:50:23 EST


On 10/27/2014 04:09 PM, Matthias Klein wrote:
Numerate the GPIOs from 0..53 instead of 202..255.

What's the motivation for this? The GPIO IDs should all come from DT, which encodes everything as an ID relative to a particular controllers, and hence the actual value of the base address should be irrelevant.

diff --git a/drivers/pinctrl/pinctrl-bcm2835.c b/drivers/pinctrl/pinctrl-bcm2835.c

@@ -382,7 +382,7 @@ static struct gpio_chip bcm2835_gpio_chip = {

- .base = -1,
+ .base = 0,

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