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[71.197.186.152]) by smtp.googlemail.com with ESMTPSA id g71sm602255pgc.41.2019.06.13.12.43.36 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 13 Jun 2019 12:43:37 -0700 (PDT) From: Kevin Hilman To: Martin Blumenstingl Subject: Re: [PATCH 0/4] ARM: dts: meson8b: add VDDEE / mali-supply In-Reply-To: References: <20190525190204.7897-1-martin.blumenstingl@googlemail.com> <7htvcv3dhh.fsf@baylibre.com> Date: Thu, 13 Jun 2019 12:43:36 -0700 Message-ID: <7hd0jh46fr.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190613_124338_486143_22813354 X-CRM114-Status: GOOD ( 16.56 ) 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: linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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 Martin Blumenstingl writes: > On Wed, Jun 12, 2019 at 1:32 AM Kevin Hilman wrote: >> >> Martin Blumenstingl writes: >> >> > EC-100 and Odroid-C1 use a "copy" of the VCCK regulator as "VDDEE" >> > regulator. VDDEE supplies the Mali GPU and various other bits within >> > the SoC. >> > >> > The VDDEE regulator is not exclusive to the Mali GPU so it must not >> > change it's voltage. The GPU OPP table has a fixed voltage for all >> > frequencies of 1.10V. This matches with what u-boot sets on my EC-100 >> > and Odroid-C1. >> > >> > Dependencies: >> > - compile time: patch #4 depends on my other patch "ARM: meson8b-mxq: >> > better support for the TRONFY MXQ" from [0] >> > - runtime: we don't want the kernel to change the output of the VDDEE >> > regulator to the maximum value. Thus the PWM driver has to be able >> > to read the PWM period and duty cycle from u-boot. This is supported >> > with my series called "pwm-meson: cleanups and improvements" from [1] >> >> Just FYI... unless I hear otherwise, I'll wait for the PWM cleanups to >> land before queuing this series. > > I'm happy with that because I'm not sure what will happen *without* > the PWM improvements OK, then I'll rely on you to ping (or resend) on this series to remind me when the PWM stuff has landed. Thanks, Kevin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel