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Date: Thu, 8 Sep 2022 12:05:37 +0000
From: <Conor.Dooley@...rochip.com>
To: <Shravan.Chippa@...rochip.com>
CC: <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<Daire.McNamara@...rochip.com>, <Shravan.Chippa@...rochip.com>,
<paul.walmsley@...ive.com>, <palmer@...belt.com>,
<aou@...s.berkeley.edu>, <Cyril.Jean@...rochip.com>,
<Lewis.Hanly@...rochip.com>, <Praveen.Kumar@...rochip.com>,
<wg@...es-embedded.de>, <Hugh.Breslin@...rochip.com>,
<devicetree@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 10/10] riscv: dts: microchip: add a devicetree for
aries' m100pfsevp
Hey Shravan,
Please don't drop the lists etc from CC.
On 08/09/2022 12:29, shravan Chippa - I35088 wrote:>
>> -----Original Message-----
>> From: Conor Dooley <conor.dooley@...rochip.com>
>> Sent: 08 September 2022 04:47 PM
>> To: Rob Herring <robh+dt@...nel.org>; Krzysztof Kozlowski
>> <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley - M52691
>> <Conor.Dooley@...rochip.com>; Daire McNamara - X61553
>> <Daire.McNamara@...rochip.com>; shravan Chippa - I35088
>> <Shravan.Chippa@...rochip.com>
>> Cc: Paul Walmsley <paul.walmsley@...ive.com>; Palmer Dabbelt
>> <palmer@...belt.com>; Albert Ou <aou@...s.berkeley.edu>; Cyril Jean -
>> M31571 <Cyril.Jean@...rochip.com>; Lewis Hanly - M34782
>> <Lewis.Hanly@...rochip.com>; Praveen Kumar - I30718
>> <Praveen.Kumar@...rochip.com>; Wolfgang Grandegger <wg@...es-
>> embedded.de>; Hugh Breslin - M31864 <Hugh.Breslin@...rochip.com>;
>> devicetree@...r.kernel.org; linux-riscv@...ts.infradead.org; linux-
>> kernel@...r.kernel.org
>> Subject: [PATCH v4 10/10] riscv: dts: microchip: add a devicetree for aries'
>> m100pfsevp
>>
>> Add device trees for both configs used by the Aries Embedded M100PFSEVP.
>> The M100OFSEVP consists of a MPFS250T on a SOM,
>> featuring:
>> - 2GB DDR4 SDRAM dedicated to the HMS
>> - 512MB DDR4 SDRAM dedicated to the FPGA
>> - 32 MB SPI NOR Flash
>> - 4 GByte eMMC
>>
>> and a carrier board with:
>> - 2x Gigabit Ethernet
>> - USB
>> - 2x UART
>> - 2x CAN
>> - TFT connector
>> - HSMC extension connector
>> - 3x PMOD extension connectors
>> - microSD-card slot
>>
>> Link: https://www.aries-embedded.com/polarfire-soc-fpga-microsemi-
>> m100pfs-som-mpfs025t-pcie-serdes
>> Link: https://www.aries-embedded.com/evaluation-kit/fpga/polarfire-
>> microchip-soc-fpga-m100pfsevp-riscv-hsmc-pmod
>> Link: https://downloads.aries-
>> embedded.de/products/M100PFS/Hardware/M100PFSEVP-Schematics.pdf
>> Co-developed-by: Wolfgang Grandegger <wg@...es-embedded.de>
>> Signed-off-by: Wolfgang Grandegger <wg@...es-embedded.de>
>> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
>> diff --git a/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts
>> b/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts
>> new file mode 100644
>> index 000000000000..184cb36a175e
>> --- /dev/null
>> +++ b/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts
>> @@ -0,0 +1,179 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Original all-in-one devicetree:
>> + * Copyright (C) 2021-2022 - Wolfgang Grandegger <wg@...es-
>> embedded.de>
>> + * Rewritten to use includes:
>> + * Copyright (C) 2022 - Conor Dooley <conor.dooley@...rochip.com> */
>> +/dts-v1/;
>> +
>> +#include "mpfs.dtsi"
>> +#include "mpfs-m100pfs-fabric.dtsi"
>> +
>> +/* Clock frequency (in Hz) of the rtcclk */
>> +#define MTIMER_FREQ 1000000
>> +
>> +/ {
>> + model = "Aries Embedded M100PFEVPS";
>> + compatible = "aries,m100pfsevp", "microchip,mpfs";
>> +
>> + aliases {
>> + ethernet0 = &mac0;
>> + ethernet1 = &mac1;
>> + serial0 = &mmuart0;
>> + serial1 = &mmuart1;
>> + serial2 = &mmuart2;
>> + serial3 = &mmuart3;
>> + serial4 = &mmuart4;
>> + gpio0 = &gpio0;
>> + gpio1 = &gpio2;
>> + };
>> +
>> + chosen {
>> + stdout-path = "serial1:115200n8";
>> + };
>> +
>> + cpus {
>> + timebase-frequency = <MTIMER_FREQ>;
>> + };
>> +
>> + ddrc_cache_lo: memory@...00000 {
>> + device_type = "memory";
>> + reg = <0x0 0x80000000 0x0 0x40000000>;
>> + };
>> + ddrc_cache_hi: memory@...0000000 {
>> + device_type = "memory";
>> + reg = <0x10 0x40000000 0x0 0x40000000>;
>> + };
>> +};
>> +
>> +&can0 {
>> + status = "okay";
>> +};
>> +
>> +&i2c0 {
>> + status = "okay";
>> +};
>> +
>> +&i2c1 {
>> + status = "okay";
>> +};
>> +
>> +&gpio0 {
>> + interrupts = <13>, <14>, <15>, <16>,
>> + <17>, <18>, <19>, <20>,
>> + <21>, <22>, <23>, <24>,
>> + <25>, <26>;
>
> Commented bellow...
>
>> + ngpios = <14>;
>> + status = "okay";
>> +
>> + pmic-irq-hog {
>> + gpio-hog;
>> + gpios = <13 0>;
>> + input;
>> + };
>> +
>> + /* Set to low for eMMC, high for SD-card */
>> + mmc-sel-hog {
>> + gpio-hog;
>> + gpios = <12 0>;
>> + output-high;
>> + };
>> +};
>> +
>> +&gpio2 {
>> + interrupts = <13>, <14>, <15>, <16>,
>> + <17>, <18>, <19>, <20>,
>> + <21>, <22>, <23>, <24>,
>> + <25>, <26>, <27>, <28>,
>> + <29>, <30>, <31>, <32>,
>> + <33>, <34>, <35>, <36>,
>> + <37>, <38>, <39>, <40>,
>> + <41>, <42>, <43>, <44>;
>> + status = "okay";
>> +};
>
> Same interrupt numbers GPIO2 and GPIO0?
>
> As per my understanding, GPIO2 and GPIO0 are using maxed interrupt lines
> Only one bank GPIO0/GPIO2 can work in direct interrupt mode
> other should be in non-direct interrupt mode.
Yeah, good spot - this cannot be correct. I had a look in the HSS and there does
not appear to be anything setting the GPIO_INTERRUPT_FAB_CR for the m100pfsevp
target & therefore would be at its default value of 0 - so GPIO2 should be using
interrupt 53 for all GPIOs.
Thanks,
Conor.
>> +
>> +&mac0 {
>> + status = "okay";
>> + phy-mode = "gmii";
>> + phy-handle = <&phy0>;
>> + phy0: ethernet-phy@0 {
>> + reg = <0>;
>> + };
>> +};
>> +
>> +&mac1 {
>> + status = "okay";
>> + phy-mode = "gmii";
>> + phy-handle = <&phy1>;
>> + phy1: ethernet-phy@0 {
>> + reg = <0>;
>> + };
>> +};
>> +
>> +&mbox {
>> + status = "okay";
>> +};
>> +
>> +&mmc {
>> + max-frequency = <50000000>;
>> + bus-width = <4>;
>> + cap-mmc-highspeed;
>> + cap-sd-highspeed;
>> + no-1-8-v;
>> + sd-uhs-sdr12;
>> + sd-uhs-sdr25;
>> + sd-uhs-sdr50;
>> + sd-uhs-sdr104;
>> + disable-wp;
>> + status = "okay";
>> +};
>> +
>> +&mmuart1 {
>> + status = "okay";
>> +};
>> +
>> +&mmuart2 {
>> + status = "okay";
>> +};
>> +
>> +&mmuart3 {
>> + status = "okay";
>> +};
>> +
>> +&mmuart4 {
>> + status = "okay";
>> +};
>> +
>> +&pcie {
>> + status = "okay";
>> +};
>> +
>> +&qspi {
>> + status = "okay";
>> +};
>> +
>> +&refclk {
>> + clock-frequency = <125000000>;
>> +};
>> +
>> +&rtc {
>> + status = "okay";
>> +};
>> +
>> +&spi0 {
>> + status = "okay";
>> +};
>> +
>> +&spi1 {
>> + status = "okay";
>> +};
>> +
>> +&syscontroller {
>> + status = "okay";
>> +};
>> +
>> +&usb {
>> + status = "okay";
>> + dr_mode = "host";
>> +};
>> --
>> 2.36.1
>
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