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<457567cc-4863-42a4-8b91-27de17b51887@nvidia.com> Date: Thu, 4 Sep 2025 15:35:14 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 2/2] ARM: dts: aspeed: Add NVIDIA GB200 UT3.0b board To: Andrew Jeffery , robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: joel@jms.id.au, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org References: <20250815224344.908130-1-donalds@nvidia.com> <20250815224344.908130-3-donalds@nvidia.com> Content-Language: en-US From: Donald Shannon In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SJ0PR03CA0193.namprd03.prod.outlook.com (2603:10b6:a03:2ef::18) To PH7PR12MB7282.namprd12.prod.outlook.com (2603:10b6:510:209::7) X-Mailing-List: linux-aspeed@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 80e67b6c-095d-480d-4381-08ddec0352aa X-MS-Exchange-CrossTenant-AuthSource: PH7PR12MB7282.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Sep 2025 22:35:17.4073 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: klc1ojWHAfPXQhXi7x0XukEurzzLdi/MB+jaJGQPr9OxZtjVyTFkGwryU2zZPFSQFXvyEmVY1I2px5RVv0NOWg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH1PR12MB9669 On 9/2/25 22:46, Andrew Jeffery wrote: > External email: Use caution opening links or attachments > > > Hi Donald, > > Sorry for the delay. > > On Fri, 2025-08-15 at 15:43 -0700, Donald Shannon wrote: >> This is an Aspeed AST2600 based unit testing platform for GB200. >> UT3.0b is different than nvidia-gb200nvl-bmc due to networking topology >> differences, additional gpio expanders, and voltage regulator gating >> some devices. >> >> Reference to Ast2600 SOC [1]. >> Reference to Blackwell GB200NVL Platform [2]. >> >> Link: https://www.aspeedtech.com/server_ast2600/ [1] >> Link: https://nvdam.widen.net/s/wwnsxrhm2w/blackwell-datasheet-3384703 [2] >> Signed-off-by: Donald Shannon >> --- >> arch/arm/boot/dts/aspeed/Makefile |    1 + >> .../aspeed/aspeed-bmc-nvidia-gb200-ut30b.dts | 1030 +++++++++++++++++ >> 2 files changed, 1031 insertions(+) >> create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-gb200-ut30b.dts >> >> diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile >> index aba7451ab749..37edc4625a9f 100644 >> --- a/arch/arm/boot/dts/aspeed/Makefile >> +++ b/arch/arm/boot/dts/aspeed/Makefile >> > *snip* > >> +&gpio0 { >> + gpio-line-names = >> + /*A0-A7*/ "", "", "", "", "", "", "", "", >> + /*B0-B7*/ "", "", "", "", "", "", "", "", >> + /*C0-C7*/ "SGPIO_I2C_MUX_SEL-O", "", "", "", "", "", "", "", >> + /*D0-D7*/ "", "", "", "UART1_MUX_SEL-O", "", "FPGA_PEX_RST_L-O", "", "", >> + /*E0-E7*/ "RTL8221_PHY_RST_L-O", "RTL8211_PHY_INT_L-I", "", "UART3_MUX_SEL-O", >> + "", "", "", "SGPIO_BMC_EN-O", >> + /*F0-F7*/ "", "", "", "", "", "", "", "", >> + /*G0-G7*/ "", "", "", "", "", "", "", "", >> + /*H0-H7*/ "", "", "", "", "", "", "", "", >> + /*I0-I7*/ "", "", "", "", "", "QSPI2_RST_L-O", "GLOBAL_WP_BMC-O", "BMC_DDR4_TEN-O", >> + /*J0-J7*/ "", "", "", "", "", "", "", "", >> + /*K0-K7*/ "", "", "", "", "", "", "", "", >> + /*L0-L7*/ "", "", "", "", "", "", "", "", >> + /*M0-M7*/ "PCIE_EP_RST_EN-O", "BMC_FRU_WP-O", "FPGA_RST_L-O", "STBY_POWER_EN-O", >> + "STBY_POWER_PG-I", "PCIE_EP_RST_L-O", "", "", >> + /*N0-N7*/ "", "", "", "", "", "", "", "", >> + /*O0-O7*/ "", "", "", "", "", "", "", "", >> + /*P0-P7*/ "", "", "", "", "", "", "", "", >> + /*Q0-Q7*/ "", "", "", "", "", "", "", "", >> + /*R0-R7*/ "", "", "", "", "", "", "", "", >> + /*S0-S7*/ "", "", "", "", "", "", "", "", >> + /*T0-T7*/ "", "", "", "", "", "", "", "", >> + /*U0-U7*/ "", "", "", "", "", "", "", "", >> + /*V0-V7*/ "AP_EROT_REQ-O", "EROT_AP_GNT-I", "", "","PCB_TEMP_ALERT-I", "","", "", >> + /*W0-W7*/ "", "", "", "", "", "", "", "", >> + /*X0-X7*/ "", "", "TPM_MUX_SEL-O", "", "", "", "", "", >> + /*Y0-Y7*/ "", "", "", "EMMC_RST-O", "","", "", "", >> + /*Z0-Z7*/ "BMC_READY-O","", "", "", "", "", "", ""; >> +}; >> + >> +&gpio1 { >> + /* 36 1.8V GPIOs */ >> + gpio-line-names = >> + /*A0-A7*/ "", "", "", "", "", "", "", "", >> + /*B0-B7*/ "", "", "", "", "", "", "IO_EXPANDER_INT_L-I","", >> + /*C0-C7*/ "", "", "", "", "", "", "", "", >> + /*D0-D7*/ "", "", "", "", "", "", "SPI_HOST_TPM_RST_L-O", "SPI_BMC_FPGA_INT_L-I", >> + /*E0-E7*/ "", "", "", "", "", "", "", ""; >> +}; >> + >> +&sgpiom0 { > So the style guide asks the referenced nodes to be ordered either > alphabetically, or in DTSI order[1] (which should be unit-address > order). > > [1]: https://docs.kernel.org/devicetree/bindings/dts-coding-style.html#order-of-nodes > > What we have to the quoted section above isn't in alphabetical order. > To this point it was DTSI order, but that breaks here too. > > My preference is that nodes in the DTS referencing the DTSI are > alphabetical (as we can't see the unit address for ordering). Can you > please fix it? > > You mention in your cover letter that ordering was addressed in v3 - > did we lose that along the way? > > *snip* > >> + >> +&uart_routing { }; > Drop this? > > Cheers, > > Andrew Hi Andrew, Thank you. I will switch to alphabetical order and remove uart_routing. Thanks, Don