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[86.49.110.70]) by smtp.gmail.com with ESMTPSA id x20sm22068984wme.6.2019.01.10.06.38.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Jan 2019 06:38:07 -0800 (PST) Subject: Re: [PATCH] arm64: dts: renesas: r8a77990: ebisu: Fix backlight regulator numbering To: Simon Horman , Geert Uytterhoeven References: <20190109140045.17449-1-marek.vasut@gmail.com> <20190109165822.tmj7qbho46f7clvg@verge.net.au> <20190110100202.4eqyge7vadlmodsy@verge.net.au> From: Marek Vasut Openpgp: preference=signencrypt Message-ID: <33d99771-695e-97ba-dfcb-25e08c91d300@gmail.com> Date: Thu, 10 Jan 2019 14:40:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <20190110100202.4eqyge7vadlmodsy@verge.net.au> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190110_063810_610700_4E53B211 X-CRM114-Status: GOOD ( 22.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-Renesas , Wolfram Sang , Laurent Pinchart , Linux ARM , Marek Vasut Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 1/10/19 11:02 AM, Simon Horman wrote: > On Wed, Jan 09, 2019 at 05:58:23PM +0100, Simon Horman wrote: >> On Wed, Jan 09, 2019 at 04:26:25PM +0100, Geert Uytterhoeven wrote: >>> On Wed, Jan 9, 2019 at 3:01 PM wrote: >>>> From: Marek Vasut >>>> >>>> There are two regulator1 nodes in the Ebisu DTS right now, one 3.3V for >>>> the eMMC and one 12V for the backlight. This causes one to be overwritten >>>> by the other, ultimatelly resulting in inoperable eMMC, which depends on >>>> the former. Fix this by renumbering the backlight regulator to regulator2. >>>> >>>> Signed-off-by: Marek Vasut >>>> Cc: Laurent Pinchart >>>> Cc: Simon Horman >>>> Cc: Wolfram Sang >>>> Cc: linux-renesas-soc@vger.kernel.org >>>> Reported-by: Simon Horman >>>> Fixes: 9d16c4a10e07 ("arm64: dts: renesas: r8a77990: ebisu: Add backlight") >>> >>> Reviewed-by: Geert Uytterhoeven >>> >>>> --- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts >>>> +++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts >>>> @@ -191,7 +191,7 @@ >>>> clock-frequency = <24576000>; >>>> }; >>>> >>>> - reg_12p0v: regulator1 { >>>> + reg_12p0v: regulator2 { >>>> compatible = "regulator-fixed"; >>>> regulator-name = "D12.0V"; >>>> regulator-min-microvolt = <12000000>; >>> >>> Perhaps the node name should get a more descriptive suffix >>> (e.g. "regulator-12p0v"), like is already done for some of the other >>> regulators? >> >> I think I would prefer that addressed in a follow-up patch. > > Thanks for this patch. > > I have now tested it and it looks good to me. > I can now access eMMC as a block device. > > Tested-by: Simon Horman > > I plan to apply this for v5.1 as the problem appears to > be introduced in a patch queued-up for v5.1. Thanks > # dmesg | egrep "(ee160000.sd|mmc0|mmcblk0|backlight)" > [ 0.893760] pwm-backlight backlight: Linked as a consumer to regulator.3 > [ 2.901953] renesas_sdhi_internal_dmac ee160000.sd: Linked as a consumer to regulator.2 > [ 2.910262] renesas_sdhi_internal_dmac ee160000.sd: Linked as a consumer to regulator.1 > [ 2.967591] renesas_sdhi_internal_dmac ee160000.sd: mmc0 base at 0xee160000 max clock rate 200 MHz > [ 3.049943] mmc0: new HS200 MMC card at address 0001 > [ 3.055843] mmcblk0: mmc0:0001 BGSD3R 29.1 GiB > [ 3.064414] mmcblk0boot0: mmc0:0001 BGSD3R partition 1 16.0 MiB > [ 3.074888] mmcblk0boot1: mmc0:0001 BGSD3R partition 2 16.0 MiB > [ 3.081522] mmcblk0rpmb: mmc0:0001 BGSD3R partition 3 4.00 MiB, chardev (243:0) > > # dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct > 512+0 records in > 512+0 records out > 536870912 bytes (537 MB) copied, 14.7343 s, 36.4 MB/s > # dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct > 512+0 records in > 512+0 records out > 536870912 bytes (537 MB) copied, 8.46809 s, 63.4 MB/s > # dd if=/dev/mmcblk0 of=/dev/null bs=1M count=512 iflag=direct > 512+0 records in > 512+0 records out > 536870912 bytes (537 MB) copied, 14.6945 s, 36.5 MB/s Seems a bit slow to me for an HS200 card :-) Update your ATF, it has QoS updates for SDHI. -- Best regards, Marek Vasut _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel