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Tue, 15 Sep 2020 20:15:53 -0500 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Tue, 15 Sep 2020 20:15:52 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Tue, 15 Sep 2020 20:15:52 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08G1Fqhb080323; Tue, 15 Sep 2020 20:15:52 -0500 Date: Tue, 15 Sep 2020 20:15:52 -0500 From: Nishanth Menon To: Suman Anna Subject: Re: [PATCH v4 5/5] arm64: dts: ti: Add support for J7200 Common Processor Board Message-ID: <20200916011552.armvw6s7jxr4gxca@akan> References: <20200914162231.2535-1-lokeshvutla@ti.com> <20200914162231.2535-6-lokeshvutla@ti.com> <7d7f3ba2-d687-a90b-e4e9-6bec835e093f@ti.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <7d7f3ba2-d687-a90b-e4e9-6bec835e093f@ti.com> User-Agent: NeoMutt/20171215 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200915_211557_305743_80931BF3 X-CRM114-Status: GOOD ( 27.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Device Tree Mailing List , Grygorii Strashko , Lokesh Vutla , Sekhar Nori , Kishon Vijay Abraham I , Tero Kristo , Rob Herring , Linux ARM Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10:33-20200915, Suman Anna wrote: > On 9/14/20 11:22 AM, Lokesh Vutla wrote: > > Add support for J7200 Common Processor Board. > > The EVM architecture is very similar to J721E as follows: > > > > +------------------------------------------------------+ > > | +-------------------------------------------+ | > > | | | | > > | | Add-on Card 1 Options | | > > | | | | > > | +-------------------------------------------+ | > > | | > > | | > > | +-------------------+ | > > | | | | > > | | SOM | | > > | +--------------+ | | | > > | | | | | | > > | | Add-on | +-------------------+ | > > | | Card 2 | | Power Supply > > | | Options | | | > > | | | | | > > | +--------------+ | <--- > > +------------------------------------------------------+ > > Common Processor Board > > > > Common Processor board is the baseboard that has most of the actual > > connectors, power supply etc. A SOM (System on Module) is plugged on > > to the common processor board and this contains the SoC, PMIC, DDR and > > basic high speed components necessary for functionality. > > > > Note: > > * The minimum configuration required to boot up the board is System On > > Module(SOM) + Common Processor Board. > > * Since there is just a single SOM and Common Processor Board, we are > > maintaining common processor board as the base dts and SOM as the dtsi > > that we include. In the future as more SOM's appear, we should move > > common processor board as a dtsi and include configurations as dts. > > * All daughter cards beyond the basic boards shall be maintained as > > overlays. > > > > Reviewed-by: Grygorii Strashko > > Signed-off-by: Lokesh Vutla > > Signed-off-by: Peter Ujfalusi > > --- > > arch/arm64/boot/dts/ti/Makefile | 2 + > > .../dts/ti/k3-j7200-common-proc-board.dts | 64 +++++++++++++++++++ > > arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 29 +++++++++ > > 3 files changed, 95 insertions(+) > > create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > > create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > > > > diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile > > index 7f28be62b8da..65506f21ba30 100644 > > --- a/arch/arm64/boot/dts/ti/Makefile > > +++ b/arch/arm64/boot/dts/ti/Makefile > > @@ -9,3 +9,5 @@ > > dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb > > > > dtb-$(CONFIG_ARCH_K3) += k3-j721e-common-proc-board.dtb > > + > > +dtb-$(CONFIG_ARCH_K3) += k3-j7200-common-proc-board.dtb > > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > > new file mode 100644 > > index 000000000000..e27069317c4e > > --- /dev/null > > +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > > @@ -0,0 +1,64 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/ > > + */ > > + > > +/dts-v1/; > > + > > +#include "k3-j7200-som-p0.dtsi" > > + > > +/ { > > + chosen { > > + stdout-path = "serial2:115200n8"; > > + bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000"; > > + }; > > +}; > > + > > +&wkup_uart0 { > > + /* Wakeup UART is used by System firmware */ > > + status = "disabled"; > > +}; > > + > > +&main_uart0 { > > + power-domains = <&k3_pds 146 TI_SCI_PD_SHARED>; > > Perhaps a comment here to explain why this is being overwritten to use > PD_SHARED. I don't see anything in the Changelog either. Shared with ATF on this platform -> I can add this comment on applying. > > Otherwise, looks good. Would that be a reviewed-by? -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel