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* [PATCH] arm64: dts: rockchip: rk3399-nanopi-r4s: Disable removed devices
@ 2026-05-05 17:29 Chen-Yu Tsai
  0 siblings, 0 replies; only message in thread
From: Chen-Yu Tsai @ 2026-05-05 17:29 UTC (permalink / raw)
  To: Heiko Stuebner; +Cc: Chen-Yu Tsai, linux-rockchip, devicetree

While the design of the NanoPi R4S is based on the common NanoPi 4
family, it is trimmed down a lot.

Disable all the peripherals on the SoC that are not used, and delete
all the external components that are not present.

Signed-off-by: Chen-Yu Tsai <wens@kernel.org>
---
 .../boot/dts/rockchip/rk3399-nanopi-r4s.dtsi  | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
index 3a9a10f531bd..4274d1b6e80a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
@@ -66,16 +66,41 @@ &emmc_phy {
 	status = "disabled";
 };
 
+/* No USB type-C PD power manager */
+/delete-node/ &fusb0;
+
+&i2c1 {
+	status = "disabled";
+};
+
 &i2c4 {
 	status = "disabled";
 };
 
+&i2c7 {
+	status = "disabled";
+};
+
+&i2s2 {
+	status = "disabled";
+};
+
+&hdmi {
+	status = "disabled";
+};
+
+&hdmi_sound {
+	status = "disabled";
+};
+
 &pcie0 {
 	num-lanes = <1>;
 	vpcie3v3-supply = <&vcc3v3_sys>;
 };
 
 &pinctrl {
+	/delete-node/ fusb30x;
+
 	gpio-leds {
 		/delete-node/ status-led-pin;
 
@@ -101,14 +126,21 @@ reset_button_pin: reset-button-pin {
 	};
 };
 
+&pwm0 {
+	status = "disabled";
+};
+
 &sdhci {
 	status = "disabled";
 };
 
 &sdio0 {
+	/delete-property/ mmc-pwrseq;
 	status = "disabled";
 };
 
+/delete-node/ &sdio_pwrseq;
+
 &u2phy0_host {
 	phy-supply = <&vdd_5v>;
 };
@@ -119,12 +151,48 @@ &u2phy1_host {
 
 &uart0 {
 	status = "disabled";
+
+	/delete-node/ bluetooth;
 };
 
+&u2phy1_host {
+	status = "disabled";
+};
+
+&usb_host1_ehci {
+	status = "disabled";
+};
+
+&usb_host1_ohci {
+	status = "disabled";
+};
 &usbdrd_dwc3_0 {
 	dr_mode = "host";
 };
 
+/delete-node/ &vbus_typec;
+
 &vcc3v3_sys {
 	vin-supply = <&vcc5v0_sys>;
 };
+
+&vopb {
+	status = "disabled";
+};
+
+&vopb_mmu {
+	status = "disabled";
+};
+
+&vopl {
+	status = "disabled";
+};
+
+&vopl_mmu {
+	status = "disabled";
+};
+
+/delete-node/ &bt_host_wake_l;
+/delete-node/ &bt_reg_on_h;
+/delete-node/ &bt_wake_l;
+/delete-node/ &wifi_reg_on_h;
-- 
2.47.3


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