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| author | Ashish Kumar <Ashish.Kumar@nxp.com> | 2020-04-16 14:43:19 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-04-16 17:46:20 +0300 |
| commit | 858e26a515c28df3ef542d9c09493b54a329d6cf (patch) | |
| tree | a35e5fcb5287eceda91cbf84f0a2c58de49c99e7 /drivers/spi/spi-fsl-qspi.c | |
| parent | 896fa735084e4a9160f8f17d75d2899fb38a6215 (diff) | |
| download | linux-858e26a515c28df3ef542d9c09493b54a329d6cf.tar.xz | |
spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer size
Reduce devm_ioremap size to (4 * AHB_BUFER_SIZE) rather than mapping
complete QSPI-Memmory as driver is now independent of flash size.
Flash of any size can be accessed.
Issue was reported on platform where devm_ioremap failure is observed
with size > 256M.
Error log on LS1021ATWR :
fsl-quadspi 1550000.spi: ioremap failed for resource [mem 0x40000000-0x7fffffff]
fsl-quadspi 1550000.spi: Freescale QuadSPI probe failed
fsl-quadspi: probe of 1550000.spi failed with error -12
This change was also suggested previously:
https://patchwork.kernel.org/patch/10508753/#22166385
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Ashish Kumar <Ashish.kumar@nxp.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/1587037399-18672-1-git-send-email-Ashish.Kumar@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsl-qspi.c')
| -rw-r--r-- | drivers/spi/spi-fsl-qspi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c index 02e5cba0a5bb..83eb8a484faf 100644 --- a/drivers/spi/spi-fsl-qspi.c +++ b/drivers/spi/spi-fsl-qspi.c @@ -876,14 +876,15 @@ static int fsl_qspi_probe(struct platform_device *pdev) res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "QuadSPI-memory"); - q->ahb_addr = devm_ioremap_resource(dev, res); + q->memmap_phy = res->start; + /* Since there are 4 cs, map size required is 4 times ahb_buf_size */ + q->ahb_addr = devm_ioremap(dev, q->memmap_phy, + (q->devtype_data->ahb_buf_size * 4)); if (IS_ERR(q->ahb_addr)) { ret = PTR_ERR(q->ahb_addr); goto err_put_ctrl; } - q->memmap_phy = res->start; - /* find the clocks */ q->clk_en = devm_clk_get(dev, "qspi_en"); if (IS_ERR(q->clk_en)) { |