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[92.176.231.205]) by smtp.gmail.com with ESMTPSA id x16-20020a05600c21d000b004063cd8105csm8421532wmj.22.2023.11.17.14.18.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Nov 2023 14:18:46 -0800 (PST) From: Javier Martinez Canillas To: Andy Shevchenko Cc: linux-kernel@vger.kernel.org, Sahaj Sarup , Geert Uytterhoeven , Helge Deller , Sam Ravnborg , Thomas Zimmermann , Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: Re: [PATCH 2/3] fbdev: ssd1307fb: Change "solomon,page-offset" property default value In-Reply-To: References: <20231116180743.2763021-1-javierm@redhat.com> <20231116180743.2763021-2-javierm@redhat.com> Date: Fri, 17 Nov 2023 23:18:45 +0100 Message-ID: <878r6w10sa.fsf@minerva.mail-host-address-is-not-set> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andy Shevchenko writes: Hello Andy, > On Thu, Nov 16, 2023 at 07:07:38PM +0100, Javier Martinez Canillas wrote: >> This is used to specify the page start address offset of the display RAM. >> >> The value is used as offset when setting the page start address with the >> SSD130X_SET_PAGE_RANGE command, and the driver currently sets its value to >> 1 if the property is not present in the Device Tree. >> >> But the datasheet mentions that the value on reset for the page start is a >> 0, so it makes more sense to also have 0 as the default value for the page >> offset if the property is not present. >> >> In fact, using a default value of 1 leads to the display not working when >> the fbdev is attached to the framebuffer console. >> >> Reported-by: Sahaj Sarup > > Closes? There's no report in a mailing list or bug tracker to reference. > Fixes? > Since the default has been the same since the driver was merged, it doesn't make that much sense for me to reference that commit. -- Best regards, Javier Martinez Canillas Core Platforms Red Hat