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Date: Tue, 12 Jun 2018 16:31:53 -0600
From: Rob Herring <robh@...nel.org>
To: Songjun Wu <songjun.wu@...ux.intel.com>
Cc: hua.ma@...ux.intel.com, yixin.zhu@...ux.intel.com,
chuanhua.lei@...el.com, linux-mips@...ux-mips.org,
qi-ming.wu@...el.com, linux-clk@...r.kernel.org,
linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
James Hogan <jhogan@...nel.org>, linux-kernel@...r.kernel.org,
Ralf Baechle <ralf@...ux-mips.org>,
Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 3/7] MIPS: intel: Add initial support for Intel MIPS SoCs
On Tue, Jun 12, 2018 at 01:40:30PM +0800, Songjun Wu wrote:
> From: Hua Ma <hua.ma@...ux.intel.com>
>
> Add initial support for Intel MIPS interAptiv SoCs made by Intel.
> This series will add support for the GRX500 family.
>
> The series allows booting a minimal system using a initramfs.
>
> Signed-off-by: Hua ma <hua.ma@...ux.intel.com>
> Signed-off-by: Songjun Wu <songjun.wu@...ux.intel.com>
> ---
>
> arch/mips/Kbuild.platforms | 1 +
> arch/mips/Kconfig | 36 ++++
> arch/mips/boot/dts/Makefile | 1 +
> arch/mips/boot/dts/intel-mips/Makefile | 3 +
> arch/mips/boot/dts/intel-mips/easy350_anywan.dts | 20 +++
> arch/mips/boot/dts/intel-mips/xrx500.dtsi | 196 +++++++++++++++++++++
Please split dts files to separate patch.
> diff --git a/arch/mips/boot/dts/intel-mips/easy350_anywan.dts b/arch/mips/boot/dts/intel-mips/easy350_anywan.dts
> new file mode 100644
> index 000000000000..40177f6cee1e
> --- /dev/null
> +++ b/arch/mips/boot/dts/intel-mips/easy350_anywan.dts
> @@ -0,0 +1,20 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/dts-v1/;
> +
> +#include <dt-bindings/interrupt-controller/mips-gic.h>
> +#include <dt-bindings/clock/intel,grx500-clk.h>
> +
> +#include "xrx500.dtsi"
> +
> +/ {
> + model = "EASY350 ANYWAN (GRX350) Main model";
A board should have a board specific compatible, too.
> + chosen {
> + bootargs = "earlycon=lantiq,0x16600000 clk_ignore_unused";
> + stdout-path = "serial0";
> + };
> +
> + memory@0 {
memory@...00000
> + device_type = "memory";
> + reg = <0x20000000 0x0e000000>;
> + };
> +};
> diff --git a/arch/mips/boot/dts/intel-mips/xrx500.dtsi b/arch/mips/boot/dts/intel-mips/xrx500.dtsi
> new file mode 100644
> index 000000000000..04a068d6d96b
> --- /dev/null
> +++ b/arch/mips/boot/dts/intel-mips/xrx500.dtsi
> @@ -0,0 +1,196 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "intel,xrx500";
This needs to be documented.
> +
> + aliases {
> + serial0 = &asc0;
> + };
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu0: cpu@0 {
> + device_type = "cpu";
> + compatible = "mti,interaptiv";
> + clocks = <&cpuclk>;
> + reg = <0>;
> + };
> +
> + cpu1: cpu@1 {
> + device_type = "cpu";
> + compatible = "mti,interaptiv";
> + reg = <1>;
> + };
> + };
> +
> + cpu_intc: interrupt-controller {
> + compatible = "mti,cpu-interrupt-controller";
> +
> + interrupt-controller;
> + #interrupt-cells = <1>;
> + };
> +
> + gic: gic@...20000 {
> + compatible = "mti,gic";
> + reg = <0x12320000 0x20000>;
> +
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + /*
> + * Declare the interrupt-parent even though the mti,gic
> + * binding doesn't require it, such that the kernel can
> + * figure out that cpu_intc is the root interrupt
> + * controller & should be probed first.
> + */
> + interrupt-parent = <&cpu_intc>;
> + mti,reserved-ipi-vectors = <56 8>;
> + };
> +
> + cgu0: cgu@...00000 {
> + compatible = "syscon";
> + reg = <0x16200000 0x100000>;
> +
> + clock {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + osc0: osc0 {
> + #clock-cells = <0>;
> + compatible = "fixed-clock";
> + clock-frequency = <40000000>;
> + clock-output-names = "osc40M";
> + };
> +
> + pll0a: pll0a {
> + #clock-cells = <0>;
> + compatible = "fixed-factor-clock";
> + clock-mult = <0x3C>;
> + clock-div = <1>;
> + clocks = <&osc0>;
> + clock-output-names = "pll0a";
> + };
> +
> + pll0b: pll0b {
> + #clock-cells = <0>;
> + compatible = "fixed-factor-clock";
> + clock-mult = <0x32>;
> + clock-div = <1>;
> + clocks = <&osc0>;
> + clock-output-names = "pll0b";
> + };
> +
> + pll3: pll3 {
> + #clock-cells = <0>;
> + compatible = "fixed-factor-clock";
> + clock-mult = <0x64>;
> + clock-div = <1>;
> + clocks = <&osc0>;
> + clock-output-names = "lcpll3";
> + };
> +
> + pll0aclk: pll0aclk {
> + #clock-cells = <1>;
> + compatible = "intel,grx500-pll0a-clk";
> + clocks = <&pll0a>;
> + reg = <0x8>;
> + clock-output-names = "cbm", "ngi",
> + "ssx4", "cpu0";
> + };
> +
> + pll0bclk: pll0bclk {
> + #clock-cells = <1>;
> + compatible = "intel,grx500-pll0b-clk";
> + clocks = <&pll0b>;
> + reg = <0x38>;
> + clock-output-names = "pae", "gswip", "ddr",
> + "cpu1";
> + };
> +
> + ddrphyclk: ddrphyclk {
> + #clock-cells = <0>;
> + compatible = "fixed-factor-clock";
> + clock-mult = <2>;
> + clock-div = <1>;
> + clocks = <&pll0bclk DDR_CLK>;
> + clock-output-names = "ddrphy";
> + };
> +
> + pcieclk: pcieclk {
> + #clock-cells = <0>;
> + compatible = "intel,grx500-pcie-clk";
> + clocks = <&pll3>;
> + reg = <0x98>;
> + clock-output-names = "pcie";
> + };
> +
> + cpuclk: cpuclk {
> + #clock-cells = <0>;
> + compatible = "intel,grx500-cpu-clk";
> + clocks = <&pll0aclk CPU0_CLK>,
> + <&pll0bclk CPU1_CLK>;
> + reg = <0x8>;
> + clock-output-names = "cpu";
> + };
> +
> + clkgate0: clkgate0 {
> + #clock-cells = <1>;
> + compatible = "intel,grx500-gate0-clk";
> + reg = <0x114>;
> + clock-output-names = "gate_xbar0", "gate_xbar1",
> + "gate_xbar2", "gate_xbar3", "gate_xbar6",
> + "gate_xbar7";
> + };
> +
> + clkgate1: clkgate1 {
> + #clock-cells = <1>;
> + compatible = "intel,grx500-gate1-clk";
> + reg = <0x120>;
> + clock-output-names = "gate_vcodec", "gate_dma0",
> + "gate_usb0", "gate_spi1", "gate_spi0",
> + "gate_cbm", "gate_ebu", "gate_sso",
> + "gate_gptc0", "gate_gptc1", "gate_gptc2",
> + "gate_urt", "gate_eip97", "gate_eip123",
> + "gate_toe", "gate_mpe", "gate_tdm", "gate_pae",
> + "gate_usb1", "gate_gswip";
> + };
> +
> + clkgate2: clkgate2 {
> + #clock-cells = <1>;
> + compatible = "intel,grx500-gate2-clk";
> + reg = <0x130>;
> + clock-output-names = "gate_pcie0", "gate_pcie1",
> + "gate_pcie2";
> + };
> +
> + voiceclk: voiceclk {
> + #clock-cells = <0>;
> + compatible = "intel,grx500-voice-clk";
> + clock-frequency = <8192000>;
> + reg = <0xc4>;
> + clock-output-names = "voice";
> + };
> +
> + i2cclk: i2cclk {
> + #clock-cells = <0>;
> + compatible = "intel,grx500-gate-dummy-clk";
> + clock-output-names = "gate_i2c";
> + };
> + };
> + };
> +
> + asc0: serial@...00000 {
> + compatible = "lantiq,asc";
> + reg = <0x16600000 0x100000>;
> +
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_SHARED 103 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SHARED 105 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SHARED 106 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&pll0aclk SSX4_CLK>, <&clkgate1 GATE_URT_CLK>;
> + clock-names = "freq", "asc";
> + };
> +};
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