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Mon, 10 Nov 2025 06:54:39 -0600 Received: from [172.24.233.14] (shark.dhcp.ti.com [172.24.233.14]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 5AACsaFw3428624; Mon, 10 Nov 2025 06:54:37 -0600 Message-ID: <1a9e3681-9fe2-405a-b2b2-038d10759f11@ti.com> Date: Mon, 10 Nov 2025 18:24:35 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 0/3] firmware: ti_sci: Partial-IO support To: "Markus Schneider-Pargmann (TI.com)" , Nishanth Menon , Tero Kristo , Santosh Shilimkar CC: Vishal Mahaveer , Kevin Hilman , Dhruva Gole , Kendall Willis , Akashdeep Kaur , , References: <20251103-topic-am62-partialio-v6-12-b4-v10-0-0557e858d747@baylibre.com> Content-Language: en-US From: Sebin Francis In-Reply-To: <20251103-topic-am62-partialio-v6-12-b4-v10-0-0557e858d747@baylibre.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A104:EE_|SJ0PR10MB4462:EE_ X-MS-Office365-Filtering-Correlation-Id: ee826c48-ec67-4d9d-792d-08de205852cf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700013|82310400026|1800799024; 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X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Nov 2025 12:54:45.0670 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ee826c48-ec67-4d9d-792d-08de205852cf X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.194];Helo=[lewvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A104.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB4462 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251110_045452_090360_6C7104F3 X-CRM114-Status: GOOD ( 18.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi On 03/11/25 18:12, Markus Schneider-Pargmann (TI.com) wrote: > Hi, > > This series adds support for Partial-IO to the ti-sci driver, > implementing the firmware interface necessary to enter this low power > state. It processes the wakeup-source properties from the devicetree and > communicates with the system firmware to enter Partial-IO mode when > appropriate wakeup sources are enabled. > > Partial-IO Overview > ------------------ > Partial-IO is a low power system state in which nearly everything is > turned off except the pins of the CANUART group (mcu_mcan0, mcu_mcan1, > wkup_uart0 and mcu_uart0). These devices can trigger a wakeup of the > system on pin activity. Note that this does not resume the system as the > DDR is off as well. So this state can be considered a power-off state > with wakeup capabilities. > > A documentation can also be found in section 6.2.4 in the TRM: > https://www.ti.com/lit/pdf/spruiv7 > [...] > Changes in v2: > - Rebase to v6.11-rc1 > - dt-binding: > - Update commit message > - Add more verbose description of the new binding for a better > explanation. > - ti_sci driver: > - Combine ti_sci_do_send() into ti_sci_do_xfer and only wait on a > response if a flag is set. > - On failure to enter Partial-IO, do emergency_restart() > - Add comments > - Fix small things > > Signed-off-by: Markus Schneider-Pargmann (TI.com) > --- Changes looks good. Reviewed-by: Sebin Francis > Markus Schneider-Pargmann (TI.com) (3): > firmware: ti_sci: Support transfers without response > firmware: ti_sci: Partial-IO support > firmware: ti_sci: Remove constant 0 function arguments > > drivers/firmware/ti_sci.c | 131 +++++++++++++++++++++++++++++++++++++++------- > drivers/firmware/ti_sci.h | 5 ++ > 2 files changed, 117 insertions(+), 19 deletions(-) > --- > base-commit: c9a389ffad27e7847c69f4d2b67ba56b77190209 > change-id: 20241008-topic-am62-partialio-v6-12-b4-c273fbac4447 > > Best regards,