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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id a6sm9720095wmj.15.2019.08.26.00.26.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 26 Aug 2019 00:26:29 -0700 (PDT) Subject: Re: [PATCH v2 5/5] arm64: dts: meson-sm1-sei610: enable DVFS To: khilman@baylibre.com, jbrunet@baylibre.com References: <20190826072539.27725-1-narmstrong@baylibre.com> <20190826072539.27725-6-narmstrong@baylibre.com> From: Neil Armstrong Openpgp: preference=signencrypt Autocrypt: addr=narmstrong@baylibre.com; prefer-encrypt=mutual; keydata= mQENBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAG0KE5laWwgQXJtc3Ryb25nIDxuYXJtc3Ryb25nQGJheWxpYnJlLmNvbT6JATsEEwEKACUC GyMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheABQJXDO2CAhkBAAoJEBaat7Gkz/iubGIH/iyk RqvgB62oKOFlgOTYCMkYpm2aAOZZLf6VKHKc7DoVwuUkjHfIRXdslbrxi4pk5VKU6ZP9AKsN NtMZntB8WrBTtkAZfZbTF7850uwd3eU5cN/7N1Q6g0JQihE7w4GlIkEpQ8vwSg5W7hkx3yQ6 2YzrUZh/b7QThXbNZ7xOeSEms014QXazx8+txR7jrGF3dYxBsCkotO/8DNtZ1R+aUvRfpKg5 ZgABTC0LmAQnuUUf2PHcKFAHZo5KrdO+tyfL+LgTUXIXkK+tenkLsAJ0cagz1EZ5gntuheLD YJuzS4zN+1Asmb9kVKxhjSQOcIh6g2tw7vaYJgL/OzJtZi6JlIW5AQ0ETVkGzwEIALyKDN/O GURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYpQTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXM coJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hi SvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY4yG6xI99NIPEVE9lNBXBKIlewIyVlkOa YvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoMMtsyw18YoX9BqMFInxqYQQ3j/HpVgTSv mo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUXoUk33HEAEQEAAYkBHwQYAQIACQUCTVkG zwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfnM7IbRuiSZS1unlySUVYu3SD6YBYnNi3G 5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa33eDIHu/zr1HMKErm+2SD6PO9umRef8V8 2o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCSKmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+ RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJ C3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTTQbM0WUIBIcGmq38+OgUsMYu4NzLu7uZF Acmp6h8guQINBFYnf6QBEADQ+wBYa+X2n/xIQz/RUoGHf84Jm+yTqRT43t7sO48/cBW9vAn9 GNwnJ3HRJWKATW0ZXrCr40ES/JqM1fUTfiFDB3VMdWpEfwOAT1zXS+0rX8yljgsWR1UvqyEP 3xN0M/40Zk+rdmZKaZS8VQaXbveaiWMEmY7sBV3QvgOzB7UF2It1HwoCon5Y+PvyE3CguhBd 9iq5iEampkMIkbA3FFCpQFI5Ai3BywkLzbA3ZtnMXR8Qt9gFZtyXvFQrB+/6hDzEPnBGZOOx zkd/iIX59SxBuS38LMlhPPycbFNmtauOC0DNpXCv9ACgC9tFw3exER/xQgSpDVc4vrL2Cacr wmQp1k9E0W+9pk/l8S1jcHx03hgCxPtQLOIyEu9iIJb27TjcXNjiInd7Uea195NldIrndD+x 58/yU3X70qVY+eWbqzpdlwF1KRm6uV0ZOQhEhbi0FfKKgsYFgBIBchGqSOBsCbL35f9hK/JC 6LnGDtSHeJs+jd9/qJj4WqF3x8i0sncQ/gszSajdhnWrxraG3b7/9ldMLpKo/OoihfLaCxtv xYmtw8TGhlMaiOxjDrohmY1z7f3rf6njskoIXUO0nabun1nPAiV1dpjleg60s3OmVQeEpr3a K7gR1ljkemJzM9NUoRROPaT7nMlNYQL+IwuthJd6XQqwzp1jRTGG26J97wARAQABiQM+BBgB AgAJBQJWJ3+kAhsCAikJEBaat7Gkz/iuwV0gBBkBAgAGBQJWJ3+kAAoJEHfc29rIyEnRk6MQ AJDo0nxsadLpYB26FALZsWlN74rnFXth5dQVQ7SkipmyFWZhFL8fQ9OiIoxWhM6rSg9+C1w+ n45eByMg2b8H3mmQmyWztdI95OxSREKwbaXVapCcZnv52JRjlc3DoiiHqTZML5x1Z7lQ1T3F 8o9sKrbFO1WQw1+Nc91+MU0MGN0jtfZ0Tvn/ouEZrSXCE4K3oDGtj3AdC764yZVq6CPigCgs 6Ex80k6QlzCdVP3RKsnPO2xQXXPgyJPJlpD8bHHHW7OLfoR9DaBNympfcbQJeekQrTvyoASw EOTPKE6CVWrcQIztUp0WFTdRGgMK0cZB3Xfe6sOp24PQTHAKGtjTHNP/THomkH24Fum9K3iM /4Wh4V2eqGEgpdeSp5K+LdaNyNgaqzMOtt4HYk86LYLSHfFXywdlbGrY9+TqiJ+ZVW4trmui NIJCOku8SYansq34QzYM0x3UFRwff+45zNBEVzctSnremg1mVgrzOfXU8rt+4N1b2MxorPF8 619aCwVP7U16qNSBaqiAJr4e5SNEnoAq18+1Gp8QsFG0ARY8xp+qaKBByWES7lRi3QbqAKZf yOHS6gmYo9gBmuAhc65/VtHMJtxwjpUeN4Bcs9HUpDMDVHdfeRa73wM+wY5potfQ5zkSp0Jp bxnv/cRBH6+c43stTffprd//4Hgz+nJcCgZKtCYIAPkUxABC85ID2CidzbraErVACmRoizhT KR2OiqSLW2x4xdmSiFNcIWkWJB6Qdri0Fzs2dHe8etD1HYaht1ZhZ810s7QOL7JwypO8dscN KTEkyoTGn6cWj0CX+PeP4xp8AR8ot4d0BhtUY34UPzjE1/xyrQFAdnLd0PP4wXxdIUuRs0+n WLY9Aou/vC1LAdlaGsoTVzJ2gX4fkKQIWhX0WVk41BSFeDKQ3RQ2pnuzwedLO94Bf6X0G48O VsbXrP9BZ6snXyHfebPnno/te5XRqZTL9aJOytB/1iUna+1MAwBxGFPvqeEUUyT+gx1l3Acl ZaTUOEkgIor5losDrePdPgE= Organization: Baylibre Message-ID: <16322ca1-d66d-ccab-adf1-eddc51746305@baylibre.com> Date: Mon, 26 Aug 2019 09:26:29 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190826072539.27725-6-narmstrong@baylibre.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190826_002631_987285_DF44195A X-CRM114-Status: GOOD ( 21.55 ) 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-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.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 On 26/08/2019 09:25, Neil Armstrong wrote: > This enables DVFS for the Amlogic SM1 based SEI610 board by: > - Adding the SM1 SoC OPPs taken from the vendor tree > - Selecting the SM1 Clock controller instead of the G12A one > - Adding the CPU rail regulator, PWM and OPPs for each CPU nodes. > > Each power supply can achieve 0.69V to 1.05V using a single PWM > output clocked at 666KHz with an inverse duty-cycle. > > DVFS has been tested by running the arm64 cpuburn at [1] and cycling > between all the possible cpufreq translations of the cpu cluster and > checking the final frequency using the clock-measurer, script at [2]. > > [1] https://github.com/ssvb/cpuburn-arm/blob/master/cpuburn-a53.S > [2] https://gist.github.com/superna9999/d4de964dbc0f84b7d527e1df2ddea25f > > Signed-off-by: Neil Armstrong Sorry forgot: Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman > --- > .../boot/dts/amlogic/meson-sm1-sei610.dts | 59 ++++++++++++++-- > arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 69 +++++++++++++++++++ > 2 files changed, 124 insertions(+), 4 deletions(-) > > diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-sei610.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-sei610.dts > index 36ac2e4b970d..69966e2e0611 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-sm1-sei610.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-sei610.dts > @@ -19,10 +19,6 @@ > ethernet0 = ðmac; > }; > > - chosen { > - stdout-path = "serial0:115200n8"; > - }; > - > emmc_pwrseq: emmc-pwrseq { > compatible = "mmc-pwrseq-emmc"; > reset-gpios = <&gpio BOOT_12 GPIO_ACTIVE_LOW>; > @@ -136,6 +132,25 @@ > regulator-always-on; > }; > > + vddcpu: regulator-vddcpu { > + /* > + * SY8120B1ABC DC/DC Regulator. > + */ > + compatible = "pwm-regulator"; > + > + regulator-name = "VDDCPU"; > + regulator-min-microvolt = <690000>; > + regulator-max-microvolt = <1050000>; > + > + vin-supply = <&dc_in>; > + > + pwms = <&pwm_AO_cd 1 1500 0>; > + pwm-dutycycle-range = <100 0>; > + > + regulator-boot-on; > + regulator-always-on; > + }; > + > vddio_ao1v8: regulator-vddio_ao1v8 { > compatible = "regulator-fixed"; > regulator-name = "VDDIO_AO1V8"; > @@ -182,6 +197,34 @@ > hdmi-phandle = <&hdmi_tx>; > }; > > +&cpu0 { > + cpu-supply = <&vddcpu>; > + operating-points-v2 = <&cpu_opp_table>; > + clocks = <&clkc CLKID_CPU_CLK>; > + clock-latency = <50000>; > +}; > + > +&cpu1 { > + cpu-supply = <&vddcpu>; > + operating-points-v2 = <&cpu_opp_table>; > + clocks = <&clkc CLKID_CPU1_CLK>; > + clock-latency = <50000>; > +}; > + > +&cpu2 { > + cpu-supply = <&vddcpu>; > + operating-points-v2 = <&cpu_opp_table>; > + clocks = <&clkc CLKID_CPU2_CLK>; > + clock-latency = <50000>; > +}; > + > +&cpu3 { > + cpu-supply = <&vddcpu>; > + operating-points-v2 = <&cpu_opp_table>; > + clocks = <&clkc CLKID_CPU3_CLK>; > + clock-latency = <50000>; > +}; > + > ðmac { > status = "okay"; > phy-handle = <&internal_ephy>; > @@ -220,6 +263,14 @@ > clock-names = "clkin0"; > }; > > +&pwm_AO_cd { > + pinctrl-0 = <&pwm_ao_d_e_pins>; > + pinctrl-names = "default"; > + clocks = <&xtal>; > + clock-names = "clkin1"; > + status = "okay"; > +}; > + > &pwm_ef { > status = "okay"; > pinctrl-0 = <&pwm_e_pins>; > diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi > index 37064d7f66c1..2b61406b0610 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi > +++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi > @@ -50,6 +50,71 @@ > compatible = "cache"; > }; > }; > + > + cpu_opp_table: opp-table { > + compatible = "operating-points-v2"; > + opp-shared; > + > + opp-100000000 { > + opp-hz = /bits/ 64 <100000000>; > + opp-microvolt = <730000>; > + }; > + > + opp-250000000 { > + opp-hz = /bits/ 64 <250000000>; > + opp-microvolt = <730000>; > + }; > + > + opp-500000000 { > + opp-hz = /bits/ 64 <500000000>; > + opp-microvolt = <730000>; > + }; > + > + opp-667000000 { > + opp-hz = /bits/ 64 <666666666>; > + opp-microvolt = <750000>; > + }; > + > + opp-1000000000 { > + opp-hz = /bits/ 64 <1000000000>; > + opp-microvolt = <770000>; > + }; > + > + opp-1200000000 { > + opp-hz = /bits/ 64 <1200000000>; > + opp-microvolt = <780000>; > + }; > + > + opp-1404000000 { > + opp-hz = /bits/ 64 <1404000000>; > + opp-microvolt = <790000>; > + }; > + > + opp-1512000000 { > + opp-hz = /bits/ 64 <1500000000>; > + opp-microvolt = <800000>; > + }; > + > + opp-1608000000 { > + opp-hz = /bits/ 64 <1608000000>; > + opp-microvolt = <810000>; > + }; > + > + opp-1704000000 { > + opp-hz = /bits/ 64 <1704000000>; > + opp-microvolt = <850000>; > + }; > + > + opp-1800000000 { > + opp-hz = /bits/ 64 <1800000000>; > + opp-microvolt = <900000>; > + }; > + > + opp-1908000000 { > + opp-hz = /bits/ 64 <1908000000>; > + opp-microvolt = <950000>; > + }; > + }; > }; > > &cecb_AO { > @@ -60,6 +125,10 @@ > compatible = "amlogic,meson-sm1-clk-measure"; > }; > > +&clkc { > + compatible = "amlogic,sm1-clkc"; > +}; > + > ðmac { > power-domains = <&pwrc PWRC_SM1_ETH_ID>; > }; > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel