[PATCH v3 4/4] arm64: dts: rockchip: Add crypto node to rk3588-base

[Dawid Olesinski]

Add the device tree node for the V2 cryptographic hardware accelerator
on RK3588.

On RK3588 the crypto IP sits inside the secure domain controlled by
SECURECRU, a register bank that is exclusively accessible to the
TrustZone firmware (TF-A). Linux must therefore obtain its clocks and
reset line through the ARM SCMI interface provided by the firmware
rather than mapping the CRU registers directly. Attempting direct MMIO
access to SECURECRU from the non-secure world triggers an asynchronous
bus fault.

The interrupt uses the four-cell GICv3 format as required by the RK3588
GIC node definition (the fourth cell is the CPU affinity/partition
specifier; 0 means no affinity constraint).

The node is disabled by default; board files that wish to use hardware
crypto offload must enable it.

Co-developed-by: Corentin Labbe <clabbe at baylibre.com>
Signed-off-by: Corentin Labbe <clabbe at baylibre.com>
Signed-off-by: Dawid Olesinski <dawidro at gmail.com>
Tested-by: Diederik de Haas <diederik at cknow-tech.com>  # Quartz64-B,
NanoPi R5S, NanoPC-T6 LTS
---
 arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
index 4fb8888c281c..980c345a5de0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
@@ -2249,6 +2249,17 @@ sdhci: mmc at fe2e0000 {
 		status = "disabled";
 	};
 
+	crypto: crypto at fe370000 {
+		compatible = "rockchip,rk3588-crypto", "rockchip,rk3568-crypto";
+		reg = <0x0 0xfe370000 0x0 0x2000>;
+		interrupts = <GIC_SPI 209 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&scmi_clk SCMI_CRYPTO_CORE>, <&scmi_clk SCMI_ACLK_SECURE_NS>,
+			 <&scmi_clk SCMI_HCLK_SECURE_NS>;
+		clock-names = "core", "aclk", "hclk";
+		resets = <&scmi_reset SCMI_SRST_CRYPTO_CORE>;
+		reset-names = "core";
+	};
+
 	rng at fe378000 {
 		compatible = "rockchip,rk3588-rng";
 		reg = <0x0 0xfe378000 0x0 0x200>;
-- 
2.47.3