Re: [PATCH v2 1/5] gpio: syscon: allow fetching syscon from parent node
On Fri, May 18, 2018 at 5:52 AM, wrote: > From: Heiko Stuebner > > Syscon nodes can be a simple-mfd and the syscon-users then be declared > as children of this node. That way the parent-child structure can be > better represented for devices that are fully embedded in the syscon. > > Therefore allow getting the syscon from the parent if neither > a special compatible nor a gpio,syscon-dev property is defined. > > Signed-off-by: Heiko Stuebner > Signed-off-by: Levin Du > --- > > Changes in v2: None > Changes in v1: > - New: allow fetching syscon from parent node in gpio-syscon driver Regardless of what happens with the rest of the patches this looks sane and generally useful, so patch applied! Yours, Linus Walleij
[PATCH v2 1/5] gpio: syscon: allow fetching syscon from parent node
From: Heiko Stuebner Syscon nodes can be a simple-mfd and the syscon-users then be declared as children of this node. That way the parent-child structure can be better represented for devices that are fully embedded in the syscon. Therefore allow getting the syscon from the parent if neither a special compatible nor a gpio,syscon-dev property is defined. Signed-off-by: Heiko Stuebner Signed-off-by: Levin Du --- Changes in v2: None Changes in v1: - New: allow fetching syscon from parent node in gpio-syscon driver drivers/gpio/gpio-syscon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c index 537cec7..7325b86 100644 --- a/drivers/gpio/gpio-syscon.c +++ b/drivers/gpio/gpio-syscon.c @@ -205,6 +205,8 @@ static int syscon_gpio_probe(struct platform_device *pdev) } else { priv->syscon = syscon_regmap_lookup_by_phandle(np, "gpio,syscon-dev"); + if (IS_ERR(priv->syscon) && np->parent) + priv->syscon = syscon_node_to_regmap(np->parent); if (IS_ERR(priv->syscon)) return PTR_ERR(priv->syscon); -- 2.7.4