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Subject[RFC PATCH 5/6] arm64: dts: ti: Add Support for AM654 SoC
Date
The AM654 SoC is a lead device of the K3 Multicore SoC architecture
platform, targeted for broad market and industrial control with aim to
meet the complex processing needs of modern embedded products.

Some highlights of this SoC are:
* Quad ARMv8 A53 cores split over two clusters
* GICv3 compliant GIC500
* Configurable L3 Cache and IO-coherent architecture
* Dual lock-step capable R5F uC for safety-critical applications
* High data throughput capable distributed DMA architecture under NAVSS
* Three Gigabit Industrial Communication Subsystems (ICSSG), each with dual
PRUs and dual RTUs
* Hardware accelerator block containing AES/DES/SHA/MD5 called SA2UL
* Centralized System Controller for Security, Power, and Resource
management.
* Dual ADCSS, eQEP/eCAP, eHRPWM, dual CAN-FD
* Flash subystem with OSPI and Hyperbus interfaces
* Multimedia capability with CAL, DSS7-UL, SGX544, McASP
* Peripheral connectivity including USB3, PCIE, MMC/SD, GPMC, I2C, SPI,
GPIO

See AM65x Technical Reference Manual (SPRUID7, April 2018)
for further details: http://www.ti.com/lit/pdf/spruid7

We introduce the Kconfig symbol for the SoC along with this patch since
it is logically relevant point, however the usage is in subsequent
patches.

NOTE: AM654 is the first of the device variants, hence we introduce a
generic am6.dtsi.

Signed-off-by: Benjamin Fair <b-fair@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
---
MAINTAINERS | 1 +
arch/arm64/boot/dts/ti/k3-am6.dtsi | 144 +++++++++++++++++++++++++++++++++++
arch/arm64/boot/dts/ti/k3-am654.dtsi | 117 ++++++++++++++++++++++++++++
drivers/soc/ti/Kconfig | 14 ++++
4 files changed, 276 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am6.dtsi
create mode 100644 arch/arm64/boot/dts/ti/k3-am654.dtsi

diff --git a/MAINTAINERS b/MAINTAINERS
index cfb35b252ac7..5f5c4eddec7a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2092,6 +2092,7 @@ M: Nishanth Menon <nm@ti.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Supported
F: Documentation/devicetree/bindings/arm/ti/k3.txt
+F: arch/arm64/boot/dts/ti/k3-*

ARM/TEXAS INSTRUMENT KEYSTONE ARCHITECTURE
M: Santosh Shilimkar <ssantosh@kernel.org>
diff --git a/arch/arm64/boot/dts/ti/k3-am6.dtsi b/arch/arm64/boot/dts/ti/k3-am6.dtsi
new file mode 100644
index 000000000000..cdfa12173aac
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am6.dtsi
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM6 SoC Family
+ *
+ * Copyright (C) 2016-2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+ model = "Texas Instruments K3 AM654 SoC";
+ compatible = "ti,am654";
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ aliases {
+ serial0 = &wkup_uart0;
+ serial1 = &mcu_uart0;
+ serial2 = &main_uart0;
+ serial3 = &main_uart1;
+ serial4 = &main_uart2;
+ };
+
+ chosen { };
+
+ firmware {
+ optee {
+ compatible = "linaro,optee-tz";
+ method = "smc";
+ };
+
+ psci: psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+ };
+
+ soc0: soc0 {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ a53_timer0: timer-cl0-cpu0 {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* cntpsirq */
+ <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* cntpnsirq */
+ <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* cntvirq */
+ <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; /* cnthpirq */
+ };
+
+ pmu: pmu {
+ compatible = "arm,armv8-pmuv3";
+ /* Recommendation from GIC500 TRM Table A.3 */
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ gic: interrupt-controller@1800000 {
+ compatible = "arm,gic-v3";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ /*
+ * NOTE: we are NOT gicv2 backward compat, so no GICC,
+ * GICH or GICV
+ */
+ reg = <0x0 0x01800000 0x0 0x10000>, /* GICD */
+ <0x0 0x01880000 0x0 0x90000>; /* GICR */
+
+ /*
+ * vcpumntirq:
+ * virtual CPU interface maintenance interrupt
+ */
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+
+ gic_its: gic-its@1000000 {
+ compatible = "arm,gic-v3-its";
+ reg = <0x0 0x1820000 0x0 0x10000>;
+ msi-controller;
+ #msi-cells = <1>;
+ };
+ };
+
+ wkup_uart0: serial@42300000 {
+ compatible = "ti,am654-uart", "ti,omap4-uart", "ns16550a";
+ reg = <0x0 0x42300000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ interrupts = <GIC_SPI 697 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <48000000>;
+ current-speed = <115200>;
+ status = "disabled";
+ };
+
+ mcu_uart0: serial@40a00000 {
+ compatible = "ti,am654-uart", "ti,omap4-uart", "ns16550a";
+ reg = <0x0 0x40a00000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ interrupts = <GIC_SPI 565 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <96000000>;
+ current-speed = <115200>;
+ status = "disabled";
+ };
+
+ main_uart0: serial@2800000 {
+ compatible = "ti,am654-uart", "ti,omap4-uart", "ns16550a";
+ reg = <0x0 0x02800000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <48000000>;
+ current-speed = <115200>;
+ status = "disabled";
+ };
+
+ main_uart1: serial@2810000 {
+ compatible = "ti,am654-uart", "ti,omap4-uart", "ns16550a";
+ reg = <0x0 0x02810000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ interrupts = <GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <48000000>;
+ current-speed = <115200>;
+ status = "disabled";
+ };
+
+ main_uart2: serial@2820000 {
+ compatible = "ti,am654-uart", "ti,omap4-uart", "ns16550a";
+ reg = <0x0 0x02820000 0x0 0x100>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ interrupts = <GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <48000000>;
+ current-speed = <115200>;
+ status = "disabled";
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am654.dtsi b/arch/arm64/boot/dts/ti/k3-am654.dtsi
new file mode 100644
index 000000000000..d9b70081daba
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am654.dtsi
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM6 SoC family in Quad core configuration
+ *
+ * Copyright (C) 2016-2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+#include "k3-am6.dtsi"
+
+/ {
+ cpus: cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu-map {
+ cluster0: cluster0 {
+ core0 {
+ cpu = <&cpu0>;
+ };
+
+ core1 {
+ cpu = <&cpu1>;
+ };
+ };
+
+ cluster1: cluster1 {
+ core0 {
+ cpu = <&cpu2>;
+ };
+
+ core1 {
+ cpu = <&cpu3>;
+ };
+ };
+ };
+
+ cpu0: cpu@0 {
+ compatible = "arm,cortex-a53","arm,armv8";
+ reg = <0x000>;
+ device_type = "cpu";
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&L2_0>;
+ };
+
+ cpu1: cpu@1 {
+ compatible = "arm,cortex-a53","arm,armv8";
+ reg = <0x001>;
+ device_type = "cpu";
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&L2_0>;
+ };
+
+ cpu2: cpu@100 {
+ compatible = "arm,cortex-a53","arm,armv8";
+ reg = <0x100>;
+ device_type = "cpu";
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&L2_1>;
+ };
+
+ cpu3: cpu@101 {
+ compatible = "arm,cortex-a53","arm,armv8";
+ reg = <0x101>;
+ device_type = "cpu";
+ enable-method = "psci";
+ i-cache-size = <0x8000>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <0x8000>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <128>;
+ next-level-cache = <&L2_1>;
+ };
+ };
+};
+
+&soc0 {
+ L2_0: l2-cache0 {
+ compatible = "cache";
+ cache-level = <2>;
+ cache-size = <0x80000>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ next-level-cache = <&msmc_l3>;
+ };
+
+ L2_1: l2-cache1 {
+ compatible = "cache";
+ cache-level = <2>;
+ cache-size = <0x80000>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ next-level-cache = <&msmc_l3>;
+ };
+
+ msmc_l3: l3-cache0 {
+ compatible = "cache";
+ cache-level = <3>;
+ };
+};
diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig
index 92770d84a288..be4570baad96 100644
--- a/drivers/soc/ti/Kconfig
+++ b/drivers/soc/ti/Kconfig
@@ -1,3 +1,17 @@
+# 64-bit ARM SoCs from TI
+if ARM64
+
+if ARCH_K3
+
+config ARCH_K3_AM6_SOC
+ bool "K3 AM6 SoC"
+ help
+ Enable support for TI's AM6 SoC Family support
+
+endif
+
+endif
+
#
# TI SOC drivers
#
--
2.15.1
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