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| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-04-04 23:11:24 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-04-04 23:11:24 +0300 |
| commit | 7c0ed565d2a90ba45ea3f895cf625c0091451960 (patch) | |
| tree | c00416cfb3f6245cc84af572b4b87fd2cc3d53ef | |
| parent | b756816dad0aaca4f57c857a86a6a4a85a9f478b (diff) | |
| parent | e8de85d5a107352ff428f735b0afc8133bcbc3e5 (diff) | |
| download | linux-7c0ed565d2a90ba45ea3f895cf625c0091451960.tar.xz | |
Merge tag 'spi-nor/for-4.17' of git://git.infradead.org/linux-mtd into mtd/next
* Make fsl-quaspi assign different names to MTD devices connected
to the same QSPI controller
* Remove an unneeded driver.bus assigned in the fsl-qspi driver
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/fsl-quadspi.txt | 24 | ||||
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 19 |
2 files changed, 42 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt index 63d4d626fbd5..483e9cfac1b1 100644 --- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt +++ b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt @@ -39,3 +39,27 @@ qspi0: quadspi@40044000 { .... }; }; + +Example showing the usage of two SPI NOR devices: + +&qspi2 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_qspi2>; + status = "okay"; + + flash0: n25q256a@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "micron,n25q256a", "jedec,spi-nor"; + spi-max-frequency = <29000000>; + reg = <0>; + }; + + flash1: n25q256a@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "micron,n25q256a", "jedec,spi-nor"; + spi-max-frequency = <29000000>; + reg = <1>; + }; +}; diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 2901c7bd9e30..3e3c0bbc45c0 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -1051,6 +1051,24 @@ static int fsl_qspi_probe(struct platform_device *pdev) spi_nor_set_flash_node(nor, np); nor->priv = q; + if (q->nor_num > 1 && !mtd->name) { + int spiflash_idx; + + ret = of_property_read_u32(np, "reg", &spiflash_idx); + if (!ret) { + mtd->name = devm_kasprintf(dev, GFP_KERNEL, + "%s-%d", + dev_name(dev), + spiflash_idx); + if (!mtd->name) { + ret = -ENOMEM; + goto mutex_failed; + } + } else { + dev_warn(dev, "reg property is missing\n"); + } + } + /* fill the hooks */ nor->read_reg = fsl_qspi_read_reg; nor->write_reg = fsl_qspi_write_reg; @@ -1174,7 +1192,6 @@ static int fsl_qspi_resume(struct platform_device *pdev) static struct platform_driver fsl_qspi_driver = { .driver = { .name = "fsl-quadspi", - .bus = &platform_bus_type, .of_match_table = fsl_qspi_dt_ids, }, .probe = fsl_qspi_probe, |