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Those nodes describe the SRAM memory area (SRAM1 16kB, SRAM2 8kB, SRAM3 8kB). Signed-off-by: Cl=C3=A9ment Le Goffic Signed-off-by: Alain Volmat --- arch/arm/boot/dts/st/stm32mp131.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/st= m32mp131.dtsi index 83ae59b73dd09..5ae33b26e313f 100644 --- a/arch/arm/boot/dts/st/stm32mp131.dtsi +++ b/arch/arm/boot/dts/st/stm32mp131.dtsi @@ -139,6 +139,30 @@ soc { interrupt-parent =3D <&intc>; ranges; =20 + sram1: sram@30000000 { + compatible =3D "mmio-sram"; + reg =3D <0x30000000 0x4000>; + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges =3D <0 0x30000000 0x4000>; + }; + + sram2: sram@30004000 { + compatible =3D "mmio-sram"; + reg =3D <0x30004000 0x2000>; + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges =3D <0 0x30004000 0x2000>; + }; + + sram3: sram@30006000 { + compatible =3D "mmio-sram"; + reg =3D <0x30006000 0x2000>; + #address-cells =3D <1>; + #size-cells =3D <1>; + ranges =3D <0 0x30006000 0x2000>; + }; + timers2: timer@40000000 { #address-cells =3D <1>; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20260722-spi_arm_stm32_dt-v1-2-6ef611523232@foss.st.com> References: <20260722-spi_arm_stm32_dt-v1-0-6ef611523232@foss.st.com> In-Reply-To: <20260722-spi_arm_stm32_dt-v1-0-6ef611523232@foss.st.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue CC: , , , , , Alain Volmat , "Valentin Caron" X-Mailer: b4 0.15.2 X-ClientProxiedBy: ENXCAS1NODE2.st.com (10.75.128.138) To STKDAG1NODE2.st.com (10.75.128.133) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB3PEPF0000885B:EE_|DU0PR10MB5876:EE_ X-MS-Office365-Filtering-Correlation-Id: eada59bc-c581-478b-aaf8-08dee7d1e9a2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|23010399003|1800799024|36860700016|376014|56012099006|11063799006|10067099003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: hlwsb8EbZs8Cc3nwqMa8k/UDe5DMv40qIbXczj7ygrscyFg76YNRKrOWQTNQ7N33wPSzdxIyzi2JBvPOcpqr2IfVBg8tNyBqum/QvH5K2Z9JoRmxZX6zLd6V8YqvXUlZwO45X304SdrvYPPL4U+2JInver7XEmvxjnhq8QnIO0hgBRhL3snFV25JuHWN2rA/znSFzA0TCSPoFtDUVUiEI5fWcZ64SPnxfR4QUnkjqDhacKPyxBXp8q0nL3uKCSRHTfQWFN9d3/P91U7hrwIxGcPdGSzCC6wJiKSeWuI4XxFxZEbauNi/22RFyrn3PRQsOSEFDeHusLoifvmXvINeKFONS3cwuypVq9B03IWMmtr9TNv0L6vvMff+W7WgyTicH8TQZecy2+LQ5ia1NAIxM5iWZ+A9W7fi8spwJC5f9Bt/FhSOLHXI1k7Ye63ca5MZIrbfLBmfuT3cILAfeeY9UeSQ1ZgnApcs++GYxjw1YHwNo1nTw4o9RF1zWgYqAWNt2RztAiANGnXbUQrjU/hlipPDTYEERd9oVz5d0K02xzA8Sf+jTCciHIS3igGoGIJhdEX6H2TIqEajI/m1BwF/Rzft69+xs+viLsQ2F856W9RcqwWB0BPiYyoUTp0ToA0kxOp73WoEu0t9bKI3ZqDxW4SA3ozcxhwTiJYn6jyTlchxeWYSLMDRovEGkb/HuhFS4EYbhNnwWRQ3cAKsxirj8w== X-Forefront-Antispam-Report: CIP:164.130.1.60;CTRY:IT;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:smtpO365.st.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(23010399003)(1800799024)(36860700016)(376014)(56012099006)(11063799006)(10067099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; 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}; =20 + /omit-if-no-ref/ + spi4_pins_b: spi4-1 { + pins1 { + pinmux =3D , /* SPI4_SCK */ + ; /* SPI4_MOSI */ + bias-disable; + drive-push-pull; + slew-rate =3D <1>; + }; + + pins2 { + pinmux =3D ; /* SPI4_MISO */ + bias-disable; + }; + }; + + /omit-if-no-ref/ + spi4_sleep_pins_b: spi4-sleep-1 { + pins { + pinmux =3D , /* SPI4_SCK */ + , /* SPI4_MISO */ + ; /* SPI4_MOSI */ + }; + }; + /omit-if-no-ref/ spi5_pins_a: spi5-0 { pins1 { @@ -2889,6 +2914,15 @@ pins2 { }; }; =20 + /omit-if-no-ref/ + spi5_sleep_pins_a: spi5-sleep-0 { + pins { + pinmux =3D , /* SPI5_SCK */ + , /* SPI5_MISO */ + ; /* SPI5_MOSI */ + }; + }; + /omit-if-no-ref/ stusb1600_pins_a: stusb1600-0 { pins { --=20 2.34.1 From nobody Fri Jul 24 23:32:35 2026 Received: from PA4PR04CU001.outbound.protection.outlook.com (mail-francecentralazon11013023.outbound.protection.outlook.com [40.107.162.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11905480DFC; 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clocks =3D <&rcc SPI2_K>; resets =3D <&rcc SPI2_R>; - dmas =3D <&dmamux1 39 0x400 0x05>, - <&dmamux1 40 0x400 0x05>; + dmas =3D <&dmamux1 39 0x400 0x01>, + <&dmamux1 40 0x400 0x01>; dma-names =3D "rx", "tx"; access-controllers =3D <&etzpc 27>; status =3D "disabled"; @@ -970,8 +970,8 @@ spi3: spi@4000c000 { interrupts =3D ; clocks =3D <&rcc SPI3_K>; resets =3D <&rcc SPI3_R>; - dmas =3D <&dmamux1 61 0x400 0x05>, - <&dmamux1 62 0x400 0x05>; + dmas =3D <&dmamux1 61 0x400 0x01>, + <&dmamux1 62 0x400 0x01>; dma-names =3D "rx", "tx"; access-controllers =3D <&etzpc 28>; status =3D "disabled"; @@ -1301,8 +1301,8 @@ spi1: spi@44004000 { interrupts =3D ; clocks =3D <&rcc SPI1_K>; resets =3D <&rcc SPI1_R>; - dmas =3D <&dmamux1 37 0x400 0x05>, - <&dmamux1 38 0x400 0x05>; + dmas =3D <&dmamux1 37 0x400 0x01>, + <&dmamux1 38 0x400 0x01>; dma-names =3D "rx", "tx"; access-controllers =3D <&etzpc 52>; status =3D "disabled"; @@ -1316,8 +1316,8 @@ spi4: spi@44005000 { interrupts =3D ; clocks =3D <&rcc SPI4_K>; 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SPI4 can be accessed via the Arduino connectors SPI5 can be accessed via the GPIO expansion connectors. Signed-off-by: Alain Volmat --- arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi b/arch/arm/boot/dts/= st/stm32mp15xx-dkx.dtsi index 599ea07bdb19c..681e9b1106025 100644 --- a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi +++ b/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi @@ -623,6 +623,20 @@ &sdmmc3 { status =3D "disabled"; }; =20 +&spi4 { + pinctrl-names =3D "default", "sleep"; + pinctrl-0 =3D <&spi4_pins_b>; + pinctrl-1 =3D <&spi4_sleep_pins_b>; + status =3D "disabled"; +}; + +&spi5 { + pinctrl-names =3D "default", "sleep"; + pinctrl-0 =3D <&spi5_pins_a>; + pinctrl-1 =3D <&spi5_sleep_pins_a>; + status =3D "disabled"; +}; + &timers1 { /* spare dmas for other usage */ /delete-property/dmas; --=20 2.34.1 From nobody Fri Jul 24 23:32:35 2026 Received: from OSPPR02CU001.outbound.protection.outlook.com (mail-norwayeastazon11013003.outbound.protection.outlook.com [40.107.159.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A305D492525; 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The pool size depends on the SPI framework that creates sg up to 4096 bytes. Signed-off-by: Cl=C3=A9ment Le Goffic Signed-off-by: Alain Volmat --- arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi b/arch/arm/boot/dts/= st/stm32mp15xx-dkx.dtsi index 681e9b1106025..580f7da7f63f2 100644 --- a/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi +++ b/arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi @@ -627,6 +627,11 @@ &spi4 { pinctrl-names =3D "default", "sleep"; pinctrl-0 =3D <&spi4_pins_b>; pinctrl-1 =3D <&spi4_sleep_pins_b>; + dmas =3D <&dmamux1 83 0x400 0x01>, + <&dmamux1 84 0x400 0x01>, + <&mdma1 0 0x3 0x1200000a 0 0>; + dma-names =3D "rx", "tx", "rxm2m"; + sram =3D <&spi4_dma_pool>; status =3D "disabled"; }; =20 @@ -637,6 +642,13 @@ &spi5 { status =3D "disabled"; }; =20 +&sram4 { + spi4_dma_pool: dma-sram@9000 { + reg =3D <0x9000 0x1000>; + pool; + }; +}; + &timers1 { /* spare dmas for other usage */ /delete-property/dmas; --=20 2.34.1 From nobody Fri Jul 24 23:32:35 2026 Received: from DU2PR03CU002.outbound.protection.outlook.com (mail-northeuropeazon11011060.outbound.protection.outlook.com [52.101.65.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D5D62D1913; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: M7xl7kGg2JQXwjkPSLqGAOgcxUiGYgj2q5+pFhEIVhDzGQcYFHChK4psMs65YwE3b4uaIxU5sXAT3QB/KLl4K+hiZBk1plluCjP3Q0nCseiqXKghVLfN6aR49J6vGi+UQ/er9HTK3PUPQF9zS+GICh00VcRSQu9v7IcWj0SN93D+q52tJNqt6C/fwK0oxl3SaC/BJllX8Y1GiGu7Zbam4YRZPf943rodt3GoXnFaxiToTKO63w5s67v7zv1iGVEwn8DsoHM6yFujDDJZYK9AtblMIzN1GeY/RwPzUfRQ0y4CVjsPYTnxr8BU8BTF2kY8Ge+fjljpSw6Kjlysi5HZYYGyFZ3KAmY1R1V3s+rEblUXdtsbQ/G6kHjsosBzvMnKle468Mukl+zE/nYtMdrupbXTVms+nkcJLGH7h+1/K5NkvwWHclC85X3Y7J/pYBTi X-OriginatorOrg: foss.st.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jul 2026 09:16:32.3724 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ff87855a-ec2f-443f-f1f4-08dee7d1ebe9 X-MS-Exchange-CrossTenant-Id: 75e027c9-20d5-47d5-b82f-77d7cd041e8f X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=75e027c9-20d5-47d5-b82f-77d7cd041e8f;Ip=[164.130.1.60];Helo=[smtpO365.st.com] X-MS-Exchange-CrossTenant-AuthSource: DB3PEPF0000885F.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR10MB9606 From: Cl=C3=A9ment Le Goffic The sram pool is used as a buffer area during a spi transfer using DMA-MDMA chaining. The pool size depends on the SPI framework that creates sg up to 4096 bytes. Signed-off-by: Cl=C3=A9ment Le Goffic Signed-off-by: Alain Volmat --- arch/arm/boot/dts/st/stm32mp135f-dk.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/st/stm32mp135f-dk.dts b/arch/arm/boot/dts/st= /stm32mp135f-dk.dts index 6022e73f58afd..35509b5c3872a 100644 --- a/arch/arm/boot/dts/st/stm32mp135f-dk.dts +++ b/arch/arm/boot/dts/st/stm32mp135f-dk.dts @@ -479,9 +479,21 @@ &spi5 { pinctrl-names =3D "default", "sleep"; pinctrl-0 =3D <&spi5_pins_a>; pinctrl-1 =3D <&spi5_sleep_pins_a>; + dmas =3D <&dmamux1 85 0x400 0x01>, + <&dmamux1 86 0x400 0x01>, + <&mdma 0 0x3 0x1200000a 0 0>; + dma-names =3D "rx", "tx", "rxm2m"; + sram =3D <&spi5_dma_pool>; status =3D "disabled"; }; =20 +&sram2 { + spi5_dma_pool: dma-sram@1000 { + reg =3D <0x1000 0x1000>; + pool; + }; +}; + &timers3 { /delete-property/dmas; /delete-property/dma-names; --=20 2.34.1