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08 Sep 2020 02:46:45 -0700 Received: by paasikivi.fi.intel.com (Postfix, from userid 1000) id 5DEE920765; Tue, 8 Sep 2020 12:46:43 +0300 (EEST) Date: Tue, 8 Sep 2020 12:46:43 +0300 From: Sakari Ailus To: Andy Shevchenko Subject: Re: [PATCH v14 2/2] media: i2c: Add OV02A10 image sensor driver Message-ID: <20200908094643.GE27352@paasikivi.fi.intel.com> References: <20200902120122.24456-1-dongchun.zhu@mediatek.com> <20200902120122.24456-3-dongchun.zhu@mediatek.com> <20200902134421.GN1891694@smile.fi.intel.com> <20200902135145.GO1891694@smile.fi.intel.com> <1599226354.4733.69.camel@mhfsdcap03> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200908_054652_533130_B29A0BFA X-CRM114-Status: GOOD ( 19.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree , Nicolas Boichat , srv_heupstream , Shengnan Wang =?utf-8?B?KOeOi+Wco+eUtyk=?= , Andy Shevchenko , Tomasz Figa , Louis Kuo , Sj Huang , Rob Herring , "moderated list:ARM/Mediatek SoC support" , Dongchun Zhu , Matthias Brugger , Bingbu Cao , matrix.zhu@aliyun.com, Mauro Carvalho Chehab , linux-arm Mailing List , Linux Media Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Andy, On Fri, Sep 04, 2020 at 04:55:56PM +0300, Andy Shevchenko wrote: > On Fri, Sep 4, 2020 at 4:38 PM Dongchun Zhu wrote: > > On Wed, 2020-09-02 at 16:51 +0300, Andy Shevchenko wrote: > > > On Wed, Sep 02, 2020 at 04:44:21PM +0300, Andy Shevchenko wrote: > > > > On Wed, Sep 02, 2020 at 08:01:22PM +0800, Dongchun Zhu wrote: > > > > > > > > + ret = fwnode_property_read_u32(dev_fwnode(dev), "rotation", &rotation); > > > > > > > > + ret = fwnode_property_read_u32_array(dev_fwnode(dev), > > > > > > > > + fwnode_property_read_u32_array(dev_fwnode(dev), > > > > > > > > + ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency", > > > > > > > > > Btw, can somebody explain, why it's fwnode API and not direct use of device property API? > > > > > > In all above cases I see no reason why not to use device property API directly. > > > > > > > From the fwnode API's usage: > > @fwnode: Firmware node to get the property of. > > > > It seems dev_fwnode(dev) could return dev->of_node->fwnode if CONFIG_OF > > is enabled, or return dev->fwnode if not. > > So?.. > > Shouldn't be the above an equivalent to device_property_*(dev, ...)? Yes. V4L2 does not have a dummy implementation for almost no V4L2 driver has no use without V4L2. -- Regards, Sakari Ailus _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel