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Message-ID: <429325fb-9190-0c65-7c54-fb6b1c8e847e@microchip.com>
Date: Fri, 17 Dec 2021 15:23:15 +0000
From: <Conor.Dooley@...rochip.com>
To: <krzysztof.kozlowski@...onical.com>, <linus.walleij@...aro.org>,
<bgolaszewski@...libre.com>, <robh+dt@...nel.org>,
<jassisinghbrar@...il.com>, <paul.walmsley@...ive.com>,
<palmer@...belt.com>, <aou@...s.berkeley.edu>,
<a.zummo@...ertech.it>, <alexandre.belloni@...tlin.com>,
<broonie@...nel.org>, <gregkh@...uxfoundation.org>,
<thierry.reding@...il.com>, <u.kleine-koenig@...gutronix.de>,
<lee.jones@...aro.org>, <linux-gpio@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-i2c@...r.kernel.org>, <linux-pwm@...r.kernel.org>,
<linux-riscv@...ts.infradead.org>, <linux-crypto@...r.kernel.org>,
<linux-rtc@...r.kernel.org>, <linux-spi@...r.kernel.org>,
<linux-usb@...r.kernel.org>
CC: <geert@...ux-m68k.org>, <bin.meng@...driver.com>,
<heiko@...ech.de>, <Lewis.Hanly@...rochip.com>,
<Daire.McNamara@...rochip.com>, <Ivan.Griffin@...rochip.com>,
<atish.patra@....com>
Subject: Re: [PATCH v2 15/17] riscv: dts: microchip: refactor icicle kit
device tree
On 17/12/2021 15:04, Krzysztof Kozlowski wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> On 17/12/2021 10:33, conor.dooley@...rochip.com wrote:
>> From: Conor Dooley <conor.dooley@...rochip.com>
>>
>> Assorted minor changes to the MPFS/Icicle kit device tree:
>>
>> - rename serial to mmuart to match microchip documentation
>> - enable mmuart4 instead of mmuart0
>
> This is not refactoring. Refactoring could include renames,
> hierarchy/layout differences, naming, coding convention. You are
> changing features, e.g. using different UART. Please split the changes.
will do :)
>
>> - move stdout path to serial1 to avoid collision with
>> bootloader running on the e51
>> - split memory node to match updated fpga design
>> - move phy0 inside mac1 node to match phy configuration
>> - add labels where missing (cpus, cache controller)
>> - add missing address cells & interrupts to MACs
>>
>> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
>> ---
>> .../microchip/microchip-mpfs-icicle-kit.dts | 52 ++++++++------
>> .../boot/dts/microchip/microchip-mpfs.dtsi | 70 ++++++++++---------
>> 2 files changed, 68 insertions(+), 54 deletions(-)
>>
>> diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
>> index 174f977c164b..f6542ef76046 100644
>> --- a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
>> +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
>> @@ -1,5 +1,5 @@
>> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>> -/* Copyright (c) 2020 Microchip Technology Inc */
>> +/* Copyright (c) 2020-2021 Microchip Technology Inc */
>>
>> /dts-v1/;
>>
>> @@ -13,25 +13,34 @@ / {
>> compatible = "microchip,mpfs-icicle-kit", "microchip,mpfs";
>>
>> aliases {
>> - ethernet0 = &emac1;
>> - serial0 = &serial0;
>> - serial1 = &serial1;
>> - serial2 = &serial2;
>> - serial3 = &serial3;
>> + ethernet0 = &mac1;
>> + serial0 = &mmuart0;
>> + serial1 = &mmuart1;
>> + serial2 = &mmuart2;
>> + serial3 = &mmuart3;
>> + serial4 = &mmuart4;
>> };
>>
>> chosen {
>> - stdout-path = "serial0:115200n8";
>> + stdout-path = "serial1:115200n8";
>> };
>>
>> cpus {
>> timebase-frequency = <RTCCLK_FREQ>;
>> };
>>
>> - memory@...00000 {
>> + ddrc_cache_lo: memory@...00000 {
>> device_type = "memory";
>> - reg = <0x0 0x80000000 0x0 0x40000000>;
>> + reg = <0x0 0x80000000 0x0 0x2e000000>;
>> clocks = <&clkcfg CLK_DDRC>;
>> + status = "okay";
>> + };
>> +
>> + ddrc_cache_hi: memory@...0000000 {
>
> This looks unrelated to refactoring - split of memory - and needs
> separate change.
>
>> + device_type = "memory";
>> + reg = <0x10 0x0 0x0 0x40000000>;
>> + clocks = <&clkcfg CLK_DDRC>;
>> + status = "okay";
>> };
>> };
>>
>> @@ -39,19 +48,19 @@ &refclk {
>> clock-frequency = <600000000>;
>> };
>>
>> -&serial0 {
>> +&mmuart1 {
>> status = "okay";
>> };
>>
>> -&serial1 {
>> +&mmuart2 {
>> status = "okay";
>> };
>>
>> -&serial2 {
>> +&mmuart3 {
>> status = "okay";
>> };
>>
>> -&serial3 {
>> +&mmuart4 {
>> status = "okay";
>> };
>>
>> @@ -61,29 +70,32 @@ &mmc {
>> bus-width = <4>;
>> disable-wp;
>> cap-sd-highspeed;
>> + cap-mmc-highspeed;
>> card-detect-delay = <200>;
>> + mmc-ddr-1_8v;
>> + mmc-hs200-1_8v;
>
> This looks unrelated to refactoring - new modes for MMC - and needs
> separate change.
>
>> sd-uhs-sdr12;
>> sd-uhs-sdr25;
>> sd-uhs-sdr50;
>> sd-uhs-sdr104;
>> };
>>
>> -&emac0 {
>> +&mac0 {
>> phy-mode = "sgmii";
>> phy-handle = <&phy0>;
>> - phy0: ethernet-phy@8 {
>> - reg = <8>;
>> - ti,fifo-depth = <0x01>;
>> - };
>> };
>>
>> -&emac1 {
>> +&mac1 {
>> status = "okay";
>> phy-mode = "sgmii";
>> phy-handle = <&phy1>;
>> phy1: ethernet-phy@9 {
>> reg = <9>;
>> - ti,fifo-depth = <0x01>;
>> + ti,fifo-depth = <0x1>;
>> + };
>> + phy0: ethernet-phy@8 {
>> + reg = <8>;
>> + ti,fifo-depth = <0x1>;
>> };
>> };
>>
>> diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
>> index 808500be26c3..d311c5ea27c9 100644
>> --- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
>> +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
>> @@ -1,5 +1,5 @@
>> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>> -/* Copyright (c) 2020 Microchip Technology Inc */
>> +/* Copyright (c) 2020-2021 Microchip Technology Inc */
>>
>> /dts-v1/;
>> #include "dt-bindings/clock/microchip,mpfs-clock.h"
>> @@ -16,7 +16,7 @@ cpus {
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> - cpu@0 {
>> + cpu0: cpu@0 {
>> compatible = "sifive,e51", "sifive,rocket0", "riscv";
>> device_type = "cpu";
>> i-cache-block-size = <64>;
>> @@ -34,7 +34,7 @@ cpu0_intc: interrupt-controller {
>> };
>> };
>>
>> - cpu@1 {
>> + cpu1: cpu@1 {
>> compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
>> d-cache-block-size = <64>;
>> d-cache-sets = <64>;
>> @@ -61,7 +61,7 @@ cpu1_intc: interrupt-controller {
>> };
>> };
>>
>> - cpu@2 {
>> + cpu2: cpu@2 {
>> compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
>> d-cache-block-size = <64>;
>> d-cache-sets = <64>;
>> @@ -88,7 +88,7 @@ cpu2_intc: interrupt-controller {
>> };
>> };
>>
>> - cpu@3 {
>> + cpu3: cpu@3 {
>> compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
>> d-cache-block-size = <64>;
>> d-cache-sets = <64>;
>> @@ -115,7 +115,7 @@ cpu3_intc: interrupt-controller {
>> };
>> };
>>
>> - cpu@4 {
>> + cpu4: cpu@4 {
>> compatible = "sifive,u54-mc", "sifive,rocket0", "riscv";
>> d-cache-block-size = <64>;
>> d-cache-sets = <64>;
>> @@ -153,8 +153,9 @@ soc {
>> compatible = "simple-bus";
>> ranges;
>>
>> - cache-controller@...0000 {
>> + cctrllr: cache-controller@...0000 {
>> compatible = "sifive,fu540-c000-ccache", "cache";
>> + reg = <0x0 0x2010000 0x0 0x1000>;
>> cache-block-size = <64>;
>> cache-level = <2>;
>> cache-sets = <1024>;
>> @@ -162,10 +163,9 @@ cache-controller@...0000 {
>> cache-unified;
>> interrupt-parent = <&plic>;
>> interrupts = <1>, <2>, <3>;
>> - reg = <0x0 0x2010000 0x0 0x1000>;
>> };
>>
>> - clint@...0000 {
>> + clint: clint@...0000 {
>> compatible = "sifive,fu540-c000-clint", "sifive,clint0";
>> reg = <0x0 0x2000000 0x0 0xC000>;
>> interrupts-extended = <&cpu0_intc HART_INT_M_SOFT>,
>> @@ -198,15 +198,6 @@ plic: interrupt-controller@...0000 {
>> riscv,ndev = <186>;
>> };
>>
>> - dma@...0000 {
>> - compatible = "sifive,fu540-c000-pdma";
>
> Removal of nodes does not look like refactoring.
>
>> - reg = <0x0 0x3000000 0x0 0x8000>;
>> - interrupt-parent = <&plic>;
>> - interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>,
>> - <30>;
>> - #dma-cells = <1>;
>> - };
>> -
>
>
> Best regards,
> Krzysztof
>
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