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From:   Brian Norris <briannorris@chromium.org>
To:     MyungJoo Ham <myungjoo.ham@samsung.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Rob Herring <robh+dt@kernel.org>
Cc:     Lin Huang <hl@rock-chips.com>, Heiko Stuebner <heiko@sntech.de>,
        Derek Basehore <dbasehore@chromium.org>,
        linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        Enric Balletbo i Serra <enric.balletbo@collabora.com>,
        =?UTF-8?q?Ga=C3=ABl=20PORTAY?= <gael.portay@collabora.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Brian Norris <briannorris@chromium.org>
Subject: [PATCH v3 11/15] arm64: dts: rk3399: Add dfi and dmc nodes
Date:   Mon,  7 Mar 2022 16:09:41 -0800
Message-Id: <20220307160918.v3.11.Ie97993621975c5463d7928a8646f3737c9f2921d@changeid>
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From: Lin Huang <hl@rock-chips.com>

These are required to support DDR DVFS on RK3399 platforms.

Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Gaël PORTAY <gael.portay@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Change since Daniel's posting: reordered by unit address, per existing
style

---

(no changes since v2)

Changes in v2:
 - rename dmc to memory-controller

Changes in v1:
This is based on a v5 posting from various authors:
https://lore.kernel.org/lkml/20210308233858.24741-3-daniel.lezcano@linaro.org/
Much of that series was already merged, so I start over with the
numbering.

 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 080457a68e3c..9065bb55ee7d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1295,6 +1295,25 @@ pwm3: pwm@ff420030 {
 		status = "disabled";
 	};
 
+	dfi: dfi@ff630000 {
+		reg = <0x00 0xff630000 0x00 0x4000>;
+		compatible = "rockchip,rk3399-dfi";
+		rockchip,pmu = <&pmugrf>;
+		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru PCLK_DDR_MON>;
+		clock-names = "pclk_ddr_mon";
+		status = "disabled";
+	};
+
+	dmc: memory-controller {
+		compatible = "rockchip,rk3399-dmc";
+		rockchip,pmu = <&pmugrf>;
+		devfreq-events = <&dfi>;
+		clocks = <&cru SCLK_DDRC>;
+		clock-names = "dmc_clk";
+		status = "disabled";
+	};
+
 	vpu: video-codec@ff650000 {
 		compatible = "rockchip,rk3399-vpu";
 		reg = <0x0 0xff650000 0x0 0x800>;
-- 
2.35.1.616.g0bdcbb4464-goog