From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: [PATCH v4 4/4] gpio: Support gpio nexus dt bindings Date: Fri, 11 Aug 2017 08:42:36 -0700 Message-ID: <20170811154236.12891-5-stephen.boyd@linaro.org> References: <20170811154236.12891-1-stephen.boyd@linaro.org> Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=tf6TQk7zcKmNRXS2oIbD00NVHnst7iewPT30yBzzAO8=; b=VfLQXw1ENNn7aKvx4yJP1lbByo3ZFJVC0m1gJy4cYWVo7+zXPwjDMC7A/bp+0Khjf5 jqdmwABi+YOgaeJqEOOId5NV4iurFSDNB06Zz8vmN6iKyXXd4UK7eHVPJ02Ntli2lOjD CjuM8fLR9xHMQ++awaHjC6sR/O37NGe1YAES0= In-Reply-To: <20170811154236.12891-1-stephen.boyd-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Rob Herring , Frank Rowand Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Russell King - ARM Linux , devicetree-spec-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Pantelis Antoniou , Mark Brown Platforms like 96boards have a standardized connector/expansion slot that exposes signals like GPIOs to expansion boards in an SoC agnostic way. We'd like the DT overlays for the expansion boards to be written once without knowledge of the SoC on the other side of the connector. This avoids the unscalable combinatorial explosion of a different DT overlay for each expansion board and SoC pair. Now that we have nexus support in the OF core let's change the function call here that parses the phandle lists of gpios to use the nexus variant. This allows us to remap phandles and their arguments through any number of nexus nodes and end up with the actual gpio provider being used. Cc: Pantelis Antoniou Acked-by: Linus Walleij Cc: Mark Brown Signed-off-by: Stephen Boyd --- drivers/gpio/gpiolib-of.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 54ce8dc58ad0..0d968c758129 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -75,8 +75,8 @@ struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np, struct gpio_desc *desc; int ret; - ret = of_parse_phandle_with_args(np, propname, "#gpio-cells", index, - &gpiospec); + ret = of_parse_phandle_with_args_map(np, propname, "gpio", index, + &gpiospec); if (ret) { pr_debug("%s: can't parse '%s' property of node '%s[%d]'\n", __func__, propname, np->full_name, index); -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html