On Thu, Aug 31, 2023 at 4:52 PM Marek Vasut [off-list ref] wrote:

On 8/31/23 06:44, Adam Ford wrote:

quoted

The i.MX8MP has an asynchronous sample rate converter which seems
to be the same as what is available on the i.MX8M Nano.

Signed-off-by: Adam Ford <redacted>
---
V3:  No Change.  The dt-binding update was already accepted into the sound tree, so that patch
      was dropped from the series

V2:  No Change.

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 83d907294fbc..3167706d81e1 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi

@@ -1459,6 +1459,26 @@ sai7: sai@30c80000 {
                                      interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
                                      status = "disabled";
                              };
+
+                             easrc: easrc@30c90000 {
+                                     compatible = "fsl,imx8mp-easrc", "fsl,imx8mn-easrc";
+                                     reg = <0x30c90000 0x10000>;
+                                     interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
+                                     clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_ASRC_IPG>;
+                                     clock-names = "mem";
+                                     dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>,
+                                            <&sdma2 18 23 0> , <&sdma2 19 23 0>,
+                                            <&sdma2 20 23 0> , <&sdma2 21 23 0>,
+                                            <&sdma2 22 23 0> , <&sdma2 23 23 0>;
+                                     dma-names = "ctx0_rx", "ctx0_tx",
+                                                 "ctx1_rx", "ctx1_tx",
+                                                 "ctx2_rx", "ctx2_tx",
+                                                 "ctx3_rx", "ctx3_tx";
+                                     firmware-name = "imx/easrc/easrc-imx8mn.bin";

Should the firmware name really be imx8mn or should it be imx8mp ?

The firmware blobs provided by NXP only has easrc-imx8mn.bin and would
be concerned that having a different name might confuse people if they
try to go look for it and they only find easrc-imx8mn.bin.  To me,
this is no different than the SDMA driver using firmware called
sdma-imx7d.bin

I think the later is better, you can always add a symlink for the
firmware name, and you can discern mx8mn/mp firmwares on the same rootfs
in case that was ever needed in the future.

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