1 files changed, 137 insertions, 0 deletions
diff --git a/sound/soc/sof/imx/imx9.c b/sound/soc/sof/imx/imx9.c
new file mode 100644
index 000000000000..853155d5990a
--- /dev/null
+++ b/sound/soc/sof/imx/imx9.c
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+/*
+ * Copyright 2025 NXP
+ */
+
+#include <linux/arm-smccc.h>
+
+#include "imx-common.h"
+
+#define IMX_SIP_SRC 0xC2000005
+#define IMX_SIP_SRC_M_RESET_ADDR_SET 0x03
+
+#define IMX95_CPU_VEC_FLAGS_BOOT BIT(29)
+
+#define IMX_SIP_LMM 0xC200000F
+#define IMX_SIP_LMM_BOOT 0x0
+#define IMX_SIP_LMM_SHUTDOWN 0x1
+
+#define IMX95_M7_LM_ID 0x1
+
+static struct snd_soc_dai_driver imx95_dai[] = {
+	IMX_SOF_DAI_DRV_ENTRY_BIDIR("sai3", 1, 32),
+};
+
+static struct snd_sof_dsp_ops sof_imx9_ops;
+
+static int imx95_ops_init(struct snd_sof_dev *sdev)
+{
+	/* first copy from template */
+	memcpy(&sof_imx9_ops, &sof_imx_ops, sizeof(sof_imx_ops));
+
+	/* ... and finally set DAI driver */
+	sof_imx9_ops.drv = get_chip_info(sdev)->drv;
+	sof_imx9_ops.num_drv = get_chip_info(sdev)->num_drv;
+
+	return 0;
+}
+
+static int imx95_chip_probe(struct snd_sof_dev *sdev)
+{
+	struct arm_smccc_res smc_res;
+	struct platform_device *pdev;
+	struct resource *res;
+
+	pdev = to_platform_device(sdev->dev);
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
+	if (!res)
+		return dev_err_probe(sdev->dev, -ENODEV,
+				     "failed to fetch SRAM region\n");
+
+	/* set core boot reset address */
+	arm_smccc_smc(IMX_SIP_SRC, IMX_SIP_SRC_M_RESET_ADDR_SET, res->start,
+		      IMX95_CPU_VEC_FLAGS_BOOT, 0, 0, 0, 0, &smc_res);
+
+	return smc_res.a0;
+}
+
+static int imx95_core_kick(struct snd_sof_dev *sdev)
+{
+	struct arm_smccc_res smc_res;
+
+	arm_smccc_smc(IMX_SIP_LMM, IMX_SIP_LMM_BOOT,
+		      IMX95_M7_LM_ID, 0, 0, 0, 0, 0, &smc_res);
+
+	return smc_res.a0;
+}
+
+static int imx95_core_shutdown(struct snd_sof_dev *sdev)
+{
+	struct arm_smccc_res smc_res;
+
+	arm_smccc_smc(IMX_SIP_LMM, IMX_SIP_LMM_SHUTDOWN,
+		      IMX95_M7_LM_ID, 0, 0, 0, 0, 0, &smc_res);
+
+	return smc_res.a0;
+}
+
+static const struct imx_chip_ops imx95_chip_ops = {
+	.probe = imx95_chip_probe,
+	.core_kick = imx95_core_kick,
+	.core_shutdown = imx95_core_shutdown,
+};
+
+static struct imx_memory_info imx95_memory_regions[] = {
+	{ .name = "sram", .reserved = false },
+	{ }
+};
+
+static const struct imx_chip_info imx95_chip_info = {
+	.ipc_info = {
+		.boot_mbox_offset = 0x6001000,
+		.window_offset = 0x6000000,
+	},
+	.has_dma_reserved = true,
+	.memory = imx95_memory_regions,
+	.drv = imx95_dai,
+	.num_drv = ARRAY_SIZE(imx95_dai),
+	.ops = &imx95_chip_ops,
+};
+
+static struct snd_sof_of_mach sof_imx9_machs[] = {
+	{
+		.compatible = "fsl,imx95-19x19-evk",
+		.sof_tplg_filename = "sof-imx95-wm8962.tplg",
+		.drv_name = "asoc-audio-graph-card2",
+	},
+	{
+	}
+};
+
+IMX_SOF_DEV_DESC(imx95, sof_imx9_machs, &imx95_chip_info, &sof_imx9_ops, imx95_ops_init);
+
+static const struct of_device_id sof_of_imx9_ids[] = {
+	{
+		.compatible = "fsl,imx95-cm7-sof",
+		.data = &IMX_SOF_DEV_DESC_NAME(imx95),
+	},
+	{
+	},
+};
+MODULE_DEVICE_TABLE(of, sof_of_imx9_ids);
+
+static struct platform_driver snd_sof_of_imx9_driver = {
+	.probe = sof_of_probe,
+	.remove = sof_of_remove,
+	.driver = {
+		.name = "sof-audio-of-imx9",
+		.pm = pm_ptr(&sof_of_pm),
+		.of_match_table = sof_of_imx9_ids,
+	},
+};
+module_platform_driver(snd_sof_of_imx9_driver);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("SOF driver for imx9 platforms");
+MODULE_AUTHOR("Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>");