From patchwork Thu Dec 14 10:33:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brandon Cheo Fusi X-Patchwork-Id: 13492737 X-Patchwork-Delegate: viresh.linux@gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ulqv/kTn" Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 520BCA6; Thu, 14 Dec 2023 02:34:44 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id ffacd0b85a97d-3363e9240b4so255495f8f.0; Thu, 14 Dec 2023 02:34:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1702550083; x=1703154883; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y0a4gKP5gtrabO/Q+KI+zErFhUsDo6C0jBoUDN/BuNw=; b=Ulqv/kTn6DSCGrQrD7UJfsLODuwPo0nDdleUKfoY1pqu//QMthx8tpKlAY3iFJBfNZ mZegDFzb+iLRu0al+bZi/ydhYRPkYxCbbidE0FmDK7ipDv4UM1VvcwjQTlFBuCaZuCdW dsfN8azSP82WjDzUZRudjYsxcBoquMdZfSzaZIgSYz+ZvQAXScxB9VDMn2sczdYdU3k3 uv1cA9YqiJUW+CICQgu3Eb6Va7JyEbM+Ch8139U+7KZU9eb26Wa071XmGB1HLQ9GF48S J1WZmAuwBdbPm63DS+pEMs6OKNMIpYkOX6ASHBpHYULIZuPHqzcxuNK+a+rDIamQhULj TO1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702550083; x=1703154883; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y0a4gKP5gtrabO/Q+KI+zErFhUsDo6C0jBoUDN/BuNw=; b=k0IjRzjUJ9/tsn6TBQa+O3RYE3XfNWodsIxIrzNYBJdsm+MU0UvPOtxf+qHi0LqVLW cldw0/Ij2ivTCQ2IlbUwuCWiLX6FJkkf4a3bVedBG6ChujpEn/b6gYWjTWbYcckufHSs rX6ZacP80oMjUggRoXYLUVUSZqNKJRVcAmwRJSvKZpannObtq0GTxHLNyCcvAMVBFH2O 3hPNVzxfAtWsfyOPhQE2YAZR8Mx2WavSW1XWFRF+wBu4vU3VjP8u4q4/ODHXx4Iky8+6 xngkd8wAgA78uhBCONtcgOE3W4W+BtBrZ53QccB31Ynf+uwhv16hpFBN/rd5BPZLiaL7 3Hvw== X-Gm-Message-State: AOJu0YwUJoTl9D01oqKcuFgY/3lhfU8Daqa6afBURmKK51sjIOde3Dz3 7Qtjf7Ga0mrCjzJxaKU9fwg= X-Google-Smtp-Source: AGHT+IFPVXHLmiez1c1QHJ6CdvlmAC2BBhWMXcwVlLmX7+8rd1VLGR63bHn6K6EuANrCno+ey5HLvQ== X-Received: by 2002:adf:e904:0:b0:336:4176:9229 with SMTP id f4-20020adfe904000000b0033641769229mr1327326wrm.54.1702550082488; Thu, 14 Dec 2023 02:34:42 -0800 (PST) Received: from localhost.localdomain ([129.0.226.240]) by smtp.gmail.com with ESMTPSA id e4-20020a5d65c4000000b003333ed23356sm15849623wrw.4.2023.12.14.02.34.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Dec 2023 02:34:41 -0800 (PST) From: Brandon Cheo Fusi To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . Wysocki" , Viresh Kumar , Yangtao Li Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Brandon Cheo Fusi Subject: [PATCH 1/5] riscv: dts: allwinner: Update opp table to allow CPU frequency scaling Date: Thu, 14 Dec 2023 11:33:38 +0100 Message-Id: <20231214103342.30775-2-fusibrandon13@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20231214103342.30775-1-fusibrandon13@gmail.com> References: <20231214103342.30775-1-fusibrandon13@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Two OPPs are currently defined for the D1/D1s; one at 408MHz and another at 1.08GHz. Switching between these can be done with the "sun50i-cpufreq-nvmem" driver. This patch populates the opp table appropriately, with inspiration from https://github.com/Tina-Linux/linux-5.4/blob/master/arch/riscv/boot/dts/sunxi/sun20iw1p1.dtsi The supply voltages are PWM-controlled, but support for that IP is still in the works. So stick to a fixed 0.9V vdd-cpu supply, which seems to be the default on most D1 boards. Signed-off-by: Brandon Cheo Fusi --- arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) +}; diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi index 64c3c2e6c..e211fe4c7 100644 --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi @@ -39,16 +39,22 @@ cpu0_intc: interrupt-controller { }; opp_table_cpu: opp-table-cpu { - compatible = "operating-points-v2"; + compatible = "allwinner,sun20i-d1-operating-points", + "allwinner,sun50i-h6-operating-points"; + nvmem-cells = <&cpu_speed_grade>; + nvmem-cell-names = "speed"; + opp-shared; opp-408000000 { + clock-latency-ns = <244144>; /* 8 32k periods */ opp-hz = /bits/ 64 <408000000>; - opp-microvolt = <900000 900000 1100000>; + opp-microvolt-speed0 = <900000>; }; opp-1080000000 { + clock-latency-ns = <244144>; /* 8 32k periods */ opp-hz = /bits/ 64 <1008000000>; - opp-microvolt = <900000 900000 1100000>; + opp-microvolt-speed0 = <900000>; }; }; @@ -115,3 +121,8 @@ pmu { <0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>; }; }; + +&sid { + cpu_speed_grade: cpu-speed-grade@0 { + reg = <0x00 0x2>; + };