kernel/linux.git/Documentation/devicetree/bindings/dsp, branch v6.18.22

Merge tag 'soc-dt-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-07-29T18:04:52+00:00

Pull SoC devicetree updates from Arnd Bergmann: "There are a few new variants of existing chips: - mt6572 is an older mobile phone chip from mediatek that was extremely popular a decade ago but never got upstreamed until now - exynos2200 is a recent high-end mobile phone chip used in a few Samsung phones like the Galaxy S22 - Renesas R-Car V4M-7 (R8A779H2) is an updated version of R-Car V4M (R8A779H0) and used in automotive applications - Tegra264 is a new chip from NVIDIA, but support is fairly minimal for now, and not much information is public about it There are five more chips in a separate branch, as those are new chip families that I merged along with the necessary infrastructure. New board support is not that exciting, with a total of 33 newly added machines here: - Evaluation platforms for the chips above, plus TI am62d2 and Sophgo sg2042 - Six 32-bit industrial boards based on stm32, imx6 and am33 chips, plus eight 64-bit rockchips rk33xx/rk35xx, am62d2, t527, imx8 and imx95 - Two newly added ASPEED BMC based motherboards, and one that got removed - Phones and Tablets based on 32-bit mt6572, tegra30 and 64-bit msm8976 SoCs - Three Laptops based on Mediatek mt8186 and Qualcomm Snapdragon X1 - A set-top box based on Amlogic meson-gxm Updates for existing machines are spread over all the above families. One notable change here is support for the RP1 I/O chip used in Raspberry Pi 5" * tag 'soc-dt-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (606 commits) riscv: dts: sophgo: fix mdio node name for CV180X riscv: dts: sophgo: sophgo-srd3-10: reserve uart0 device riscv: dts: sophgo: add Sophgo SG2042_EVB_V2.0 board device tree riscv: dts: sophgo: add Sophgo SG2042_EVB_V1.X board device tree dt-bindings: riscv: add Sophgo SG2042_EVB_V1.X/V2.0 bindings riscv: dts: sophgo: add ethernet GMAC device for sg2042 riscv: dts: sophgo: Enable ethernet device for Huashan Pi riscv: dts: sophgo: Add mdio multiplexer device for cv18xx riscv: dts: sophgo: Add ethernet device for cv18xx riscv: dts: sophgo: sg2044: add pmu configuration riscv: dts: sophgo: sg2044: add ziccrse extension riscv: dts: sophgo: add zfh for sg2042 riscv: dts: sophgo: add ziccrse for sg2042 riscv: dts: sophgo: Add xtheadvector to the sg2042 devicetree riscv: dts: sophgo: sg2044: add PCIe device support for SG2044 riscv: dts: sophgo: sg2044: add MSI device support for SG2044 riscv: dts: sophgo: add reset configuration for Sophgo CV1800 series SoC riscv: dts: sophgo: add reset generator for Sophgo CV1800 series SoC dt-bindings: soc: sophgo: Move SoCs/boards from riscv into soc, add SG2000 riscv: dts: sophgo: sg2044: Add missing riscv,cbop-block-size property ...

dt-bindings: Correct indentation and style in DTS example

2025-07-29T00:56:29+00:00

DTS example in the bindings should be indented with 2- or 4-spaces and aligned with opening '- |', so correct any differences like 3-spaces or mixtures 2- and 4-spaces in one binding. No functional changes here, but saves some comments during reviews of new patches built on existing code. Acked-by: Ulf Hansson # For MMC Acked-by: Lee Jones Acked-by: Thierry Reding Reviewed-by: Geert Uytterhoeven # renesas Link: https://lore.kernel.org/r/20250107131456.247610-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250725100241.120106-2-krzysztof.kozlowski@linaro.org Signed-off-by: Rob Herring (Arm)

dt-bindings: dsp: fsl,dsp: document 'access-controllers' property

2025-07-01T14:23:05+00:00

Some DSP instances may have their access to certain peripherals conditioned by a bus access controller such as the one from the AIPSTZ bridge. Add the optional 'access-controllers' property, which may be used in such cases. Signed-off-by: Laurentiu Mihalcea Reviewed-by: Frank Li Acked-by: Rob Herring (Arm) Signed-off-by: Shawn Guo

dt-bindings: dsp: fsl,dsp: Add resets property

2025-03-13T15:06:01+00:00

Assert and deassert functionality of the DSP found on i.MX8MP is realized by combining control bits from two modules: Audio Block Control and Debug Access Port. Audio block control bits are used to Run/Stall the DSP core while the DAP bits are used for software reset the core. The original plan was to use fsl,dsp-ctrl property and to refer the audiomix bits via syscon interface. This proposal received NACK from community we shouldn't abuse the syscon interface [1]. So remove fsl,dsp-ctrl property for i.MX8MP and use reset control interface instead. Example dts node only uses runstall control now, but softreset will be added in the future when we will convert the softreset functionality to use reset controller API. [1] https://patchwork.kernel.org/project/imx/patch/20250212085222.107102-6-daniel.baluta@nxp.com/ Reviewed-by: Rob Herring (Arm) Reviewed-by: Frank Li Signed-off-by: Daniel Baluta Acked-by: Philipp Zabel Link: https://lore.kernel.org/r/20250311085812.1296243-3-daniel.baluta@nxp.com Signed-off-by: Mathieu Poirier

dt-bindings: dsp: fsl,dsp: fix power domain count

2024-11-01T09:25:02+00:00

Per the current binding, QM/QXP DSPs are supposed to have 4 power domains, while the rest just 1. For QM/QXP, the 4 power domains are: DSP, DSP_RAM, MU13A, MU13B. First off, drop MU13A from the count as its already attached to lsio_mu13. This decreases the count to 3. Secondly, drop DSP and DSP_RAM from the count for QXP. These are already attached to the DSP's LPCGs. Thirdly, a new power domain is required for DSP-SCU communication (MU2A). With this in mind, the number of required power domains for QXP is 2 (MU2A, MU13B), while for QM it's 4 (MU13B, DSP, DSP_RAM, MU2A). Update the fsl,dsp binding to reflect all of this information. Since the arm,mhuv2 binding has an example node using the fsl,imx8qxp-dsp compatible, remove two of the extra PDs to align with the required power domain count. Signed-off-by: Laurentiu Mihalcea Reviewed-by: Krzysztof Kozlowski Signed-off-by: Shawn Guo

dt-bindings: dsp: mediatek: Add mt8188 dsp compatible

2023-01-10T13:32:31+00:00

Add support of the single-core HiFi5 audio DSP on MediaTek MT8188 SoC for pre- and post- audio processing. Signed-off-by: Tinghan Shen Reviewed-by: AngeloGioacchino Del Regno Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20230110084312.12953-2-tinghan.shen@mediatek.com Signed-off-by: Mark Brown

dt-bindings: dsp: fsl: Add SOF compatile string for i.MX8ULP

2022-08-19T12:19:54+00:00

Add SOF compatile string "fsl,imx8ulp-dsp" for supporting DSP device on i.MX8ULP platform. Signed-off-by: Shengjiu Wang Acked-by: Rob Herring Reviewed-by: Daniel Baluta Link: https://lore.kernel.org/r/1660787634-28550-1-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown

dt-bindings: dsp: mediatek: Add mt8186 dsp document

2022-06-22T12:39:31+00:00

This patch adds mt8186 dsp document. The dsp is used for Sound Open Firmware driver node. It includes registers, clocks, memory regions, and mailbox for dsp. Signed-off-by: Tinghan Shen Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220622062245.21021-4-tinghan.shen@mediatek.com Signed-off-by: Mark Brown

dt-bindings: dsp: mediatek: Use meaningful names for mbox

2022-06-22T12:39:29+00:00

Rename mbox according to actions instead of 'mbox0' and 'mbox1'. The 8195 dsp node, which uses this binding, has not yet been added to the 8195 devicetree. Signed-off-by: Tinghan Shen Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220622062245.21021-2-tinghan.shen@mediatek.com Signed-off-by: Mark Brown

ASoC: dsp: mediatek: add mt8195 dsp document

2022-04-29T13:39:35+00:00

This patch adds mt8195 dsp document. The dsp is used for Sound Open Firmware driver node. It includes registers, clocks, memory regions, and mailbox for dsp. Signed-off-by: yc.hung Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220106064847.15588-1-yc.hung@mediatek.com Signed-off-by: Mark Brown