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Date: Mon, 21 Feb 2022 10:10:46 +0100
From: Michael Walle <michael@...le.cc>
To: Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
Cc: arnd@...db.de, alexandre.belloni@...tlin.com, olof@...om.net,
soc@...nel.org, robh+dt@...nel.org, nicolas.ferre@...rochip.com,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, UNGLinuxDriver@...rochip.com,
Manohar.Puri@...rochip.com
Subject: Re: [PATCH v7] ARM: dts: add DT for lan966 SoC and 2-port board
pcb8291
Am 2022-02-21 09:08, schrieb Kavyasree Kotagiri:
> This patch adds basic DT for Microchip lan966x SoC and associated board
> pcb8291(2-port EVB). Adds peripherals required to allow booting:
> Interrupt
> Controller, Clock, Generic ARMv7 Timers, Synopsys Timer, Flexcoms,
> GPIOs.
> Also adds other peripherals like crypto(AES/SHA), DMA, Watchdog Timer,
> TRNG
> and MCAN0.
>
> Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
> ---
> v6 -> v7:
> - Removed "arm,cpu-registers-not-fw-configured" property, as not
> required.
> - Corrected "PPI interrupt cpu mask" and order of interrupts.
>
> v5 -> v6:
> - Renamed dts file to lan966x-pcb8291.dts file.
> - Disabled optional watchdog in dtsi file and enabled it in dts file.
>
> v4 -> v5:
> - Modified AES, SHA, TRNG node names as per generic names recommended.
>
> v3 -> v4:
> - Removed character 'x' from compatible string.
> - Removed memory node as handled by bootloader.
> - Renamed flexcom3 usart0 to usart3
> - Added /chosen and /aliases nodes in dts file.
>
> v2 -> v3:
> - Enabling trng in dtsi itself.
> - Removed "status=okay" dma0.
> - Add gpio pin settings for can0(missed adding this in previous
> version)
>
> v1 -> v2:
> - Moved flx3 usart0 node to dtsi file.
> - Removed status="okay" for dma0 to maintain consistency across nodes
> (which means enabling dma0 by default)
>
> arch/arm/boot/dts/Makefile | 2 +
> arch/arm/boot/dts/lan966x-pcb8291.dts | 64 +++++++
> arch/arm/boot/dts/lan966x.dtsi | 237 ++++++++++++++++++++++++++
> 3 files changed, 303 insertions(+)
> create mode 100644 arch/arm/boot/dts/lan966x-pcb8291.dts
> create mode 100644 arch/arm/boot/dts/lan966x.dtsi
>
> --- /dev/null
> +++ b/arch/arm/boot/dts/lan966x.dtsi
> @@ -0,0 +1,237 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * lan966x.dtsi - Device Tree Include file for Microchip LAN966 family
> SoC
> + *
> + * Copyright (C) 2021 Microchip Technology, Inc. and its subsidiaries
> + *
> + * Author: Kavyasree Kotagiri <kavyasree.kotagiri@...rochip.com>
> + *
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/mfd/atmel-flexcom.h>
> +#include <dt-bindings/dma/at91.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/clock/microchip,lan966x.h>
> +
> +/ {
> + model = "Microchip LAN966 family SoC";
> + compatible = "microchip,lan966";
As mentioned earlier, this isn't a documented compatible string. So,
I guess without overwriting this in the board dts it will throw an
error with the dt schema validator. OTOH, there are many dtsi files
in arch/arm/boot/dts/ doing this. I don't know what is correct here.
Everthing else looks good.
Reviewed-by: Michael Walle <michael@...le.cc>
> + interrupt-parent = <&gic>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + clock-frequency = <600000000>;
> + reg = <0x0>;
> + };
> + };
> +
> + clocks {
> + sys_clk: sys_clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <162500000>;
> + };
> +
> + cpu_clk: cpu_clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <600000000>;
> + };
> +
> + ddr_clk: ddr_clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <300000000>;
> + };
> +
> + nic_clk: nic_clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <200000000>;
> + };
> + };
> +
> + clks: clock-controller@...c00a8 {
> + compatible = "microchip,lan966x-gck";
> + #clock-cells = <1>;
> + clocks = <&cpu_clk>, <&ddr_clk>, <&sys_clk>;
> + clock-names = "cpu", "ddr", "sys";
> + reg = <0xe00c00a8 0x38>;
> + };
> +
> + timer {
> + compatible = "arm,armv7-timer";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
> IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>;
> + clock-frequency = <37500000>;
> + };
> +
> + soc {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + flx0: flexcom@...40000 {
> + compatible = "atmel,sama5d2-flexcom";
> + reg = <0xe0040000 0x100>;
> + clocks = <&clks GCK_ID_FLEXCOM0>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xe0040000 0x800>;
> + status = "disabled";
> + };
> +
> + flx1: flexcom@...44000 {
> + compatible = "atmel,sama5d2-flexcom";
> + reg = <0xe0044000 0x100>;
> + clocks = <&clks GCK_ID_FLEXCOM1>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xe0044000 0x800>;
> + status = "disabled";
> + };
> +
> + trng: rng@...48000 {
> + compatible = "atmel,at91sam9g45-trng";
> + reg = <0xe0048000 0x100>;
> + clocks = <&nic_clk>;
> + };
> +
> + aes: crypto@...4c000 {
> + compatible = "atmel,at91sam9g46-aes";
> + reg = <0xe004c000 0x100>;
> + interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
> + dmas = <&dma0 AT91_XDMAC_DT_PERID(13)>,
> + <&dma0 AT91_XDMAC_DT_PERID(12)>;
> + dma-names = "rx", "tx";
> + clocks = <&nic_clk>;
> + clock-names = "aes_clk";
> + };
> +
> + flx2: flexcom@...60000 {
> + compatible = "atmel,sama5d2-flexcom";
> + reg = <0xe0060000 0x100>;
> + clocks = <&clks GCK_ID_FLEXCOM2>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xe0060000 0x800>;
> + status = "disabled";
> + };
> +
> + flx3: flexcom@...64000 {
> + compatible = "atmel,sama5d2-flexcom";
> + reg = <0xe0064000 0x100>;
> + clocks = <&clks GCK_ID_FLEXCOM3>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xe0064000 0x800>;
> + status = "disabled";
> +
> + usart3: serial@200 {
> + compatible = "atmel,at91sam9260-usart";
> + reg = <0x200 0x200>;
> + interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&nic_clk>;
> + clock-names = "usart";
> + atmel,fifo-size = <32>;
> + status = "disabled";
> + };
> + };
> +
> + dma0: dma-controller@...68000 {
> + compatible = "microchip,sama7g5-dma";
> + reg = <0xe0068000 0x1000>;
> + interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
> + #dma-cells = <1>;
> + clocks = <&nic_clk>;
> + clock-names = "dma_clk";
> + };
> +
> + sha: crypto@...6c000 {
> + compatible = "atmel,at91sam9g46-sha";
> + reg = <0xe006c000 0xec>;
> + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> + dmas = <&dma0 AT91_XDMAC_DT_PERID(14)>;
> + dma-names = "tx";
> + clocks = <&nic_clk>;
> + clock-names = "sha_clk";
> + };
> +
> + flx4: flexcom@...70000 {
> + compatible = "atmel,sama5d2-flexcom";
> + reg = <0xe0070000 0x100>;
> + clocks = <&clks GCK_ID_FLEXCOM4>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xe0070000 0x800>;
> + status = "disabled";
> + };
> +
> + timer0: timer@...8c000 {
> + compatible = "snps,dw-apb-timer";
> + reg = <0xe008c000 0x400>;
> + clocks = <&nic_clk>;
> + clock-names = "timer";
> + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + watchdog: watchdog@...90000 {
> + compatible = "snps,dw-wdt";
> + reg = <0xe0090000 0x1000>;
> + interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&nic_clk>;
> + status = "disabled";
> + };
> +
> + can0: can@...1c000 {
> + compatible = "bosch,m_can";
> + reg = <0xe081c000 0xfc>, <0x00100000 0x4000>;
> + reg-names = "m_can", "message_ram";
> + interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "int0", "int1";
> + clocks = <&clks GCK_ID_MCAN0>, <&clks GCK_ID_MCAN0>;
> + clock-names = "hclk", "cclk";
> + assigned-clocks = <&clks GCK_ID_MCAN0>;
> + assigned-clock-rates = <40000000>;
> + bosch,mram-cfg = <0x0 0 0 64 0 0 32 32>;
> + status = "disabled";
> + };
> +
> + gpio: pinctrl@...04064 {
> + compatible = "microchip,lan966x-pinctrl";
> + reg = <0xe2004064 0xb4>,
> + <0xe2010024 0x138>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&gpio 0 0 78>;
> + interrupt-controller;
> + interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
> + #interrupt-cells = <2>;
> + };
> +
> + gic: interrupt-controller@...11000 {
> + compatible = "arm,gic-400", "arm,cortex-a7-gic";
> + #interrupt-cells = <3>;
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + reg = <0xe8c11000 0x1000>,
> + <0xe8c12000 0x2000>,
> + <0xe8c14000 0x2000>,
> + <0xe8c16000 0x2000>;
> + };
> + };
> +};
--
-michael
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