TDA4VM: TDA4VM_EVH ospi不识别_a72

yk z

Part Number: TDA4VM

hi,

ti-processor-sdk-linux-j784s4-evm-08_06_00_12.git开机后不识别ospi,发现dma获取不到，SDK中的prebuild img也如此：

[    1.322721] printk: console [ttyS2] enabled
[    1.331157] printk: bootconsole [ns16550a0] disabled
[    1.342342] cadence-qspi 47040000.spi: error -ENODEV: No Rx DMA available
[    1.349631] spi-nor: probe of spi0.0 failed with error -22
[    1.355480] cadence-qspi 47050000.spi: error -ENODEV: No Rx DMA available
[    1.362509] spi-nor spi1.0: unrecognized JEDEC id bytes: ff ff ff ff ff ff
[    1.369373] spi-nor: probe of spi1.0 failed with error -2

1 年多前

0 yk z 1 年多前

Prodigy 200 points

ospi_ti_demo.log内核开机日志

0 Cherry Zhou 1 年多前

TI__Guru* 81380 points

您好，您的问题我们升级到英文论坛看下，链接如下：

e2e.ti.com/.../tda4vm-tda4vm_evh-ospi-cannot-recognize-_a72

0 Cherry Zhou 1 年多前回复 Cherry Zhou

TI__Guru* 81380 points

确认下您用的是TI J784s4 EVM吗？

目前我们也正在处理一个现有的内部问题。有一种解决方法应该会有所帮助（但目前还未测试过）。请在 Linux 驱动程序中尝试以下更改：

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 3f64275a3140..2138bd28bd6d 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -2219,6 +2219,8 @@ static int cqspi_request_mmap_dma(struct cqspi_st *cqspi)
        if (IS_ERR(cqspi->rx_chan)) {
                int ret = PTR_ERR(cqspi->rx_chan);
                cqspi->rx_chan = NULL;
+               if (ret == -ENODEV)
+                       ret = -EPROBE_DEFER;
                return dev_err_probe(&cqspi->pdev->dev, ret, "No Rx DMA available\n");
        }
        init_completion(&c

0 yk z 1 年多前回复 Cherry Zhou

Prodigy 200 points

确认下您用的是TI J784s4 EVM吗

是的

patch:

行 206: 20230524_14:34:21:500:[ 0.000000] GICv3: 960 SPIs implemented
行 207: 20230524_14:34:21:500:[ 0.000000] GICv3: 0 Extended SPIs implemented
行 433: 20230524_14:34:22:796:[ 1.477158] cadence-qspi 47040000.spi: error (____ptrval____): No Rx DMA available
行 433: 20230524_14:34:22:796:[ 1.477158] cadence-qspi 47040000.spi: error (____ptrval____): No Rx DMA available
行 435: 20230524_14:34:22:850:[ 1.494626] spi-nor: probe of spi0.0 failed with error -22
行 435: 20230524_14:34:22:850:[ 1.494626] spi-nor: probe of spi0.0 failed with error -22
行 436: 20230524_14:34:22:850:[ 1.500467] cadence-qspi 47050000.spi: error (____ptrval____): No Rx DMA available
行 436: 20230524_14:34:22:850:[ 1.500467] cadence-qspi 47050000.spi: error (____ptrval____): No Rx DMA available
行 438: 20230524_14:34:22:850:[ 1.517669] spi-nor spi1.0: unrecognized JEDEC id bytes: ff ff ff ff ff ff
行 438: 20230524_14:34:22:850:[ 1.517669] spi-nor spi1.0: unrecognized JEDEC id bytes: ff ff ff ff ff ff
行 439: 20230524_14:34:22:851:[ 1.524533] spi-nor: probe of spi1.0 failed with error -2
行 439: 20230524_14:34:22:851:[ 1.524533] spi-nor: probe of spi1.0 failed with error -2

看起来没有效果

20230524_14:35:12:506:root@j784s4-evm:~# ls /dev/mt* -al
20230524_14:35:12:534:ls: cannot access '/dev/mt*': No such file or directory

0 Cherry Zhou 1 年多前回复 yk z

TI__Guru* 81380 points

好的那以上方法是没有用的，目前需要等待我们的内部团队在下一个SDK版本中进行修复。

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TDA4VM: TDA4VM_EVH ospi不识别_a72