diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/1108-mtd-fsl-quadspi-add-multi-flash-chip-R-W-on-ls2080a.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/1108-mtd-fsl-quadspi-add-multi-flash-chip-R-W-on-ls2080a.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/1108-mtd-fsl-quadspi-add-multi-flash-chip-R-W-on-ls2080a.patch b/target/linux/layerscape/patches-4.4/1108-mtd-fsl-quadspi-add-multi-flash-chip-R-W-on-ls2080a.patch new file mode 100644 index 0000000000..4a7a5cbcdf --- /dev/null +++ b/target/linux/layerscape/patches-4.4/1108-mtd-fsl-quadspi-add-multi-flash-chip-R-W-on-ls2080a.patch @@ -0,0 +1,42 @@ +From d3a8ee41170ff9e5298ff354c77ff99439dfe2bf Mon Sep 17 00:00:00 2001 +From: Yunhui Cui <yunhui.cui@nxp.com> +Date: Thu, 10 Mar 2016 11:33:40 +0800 +Subject: [PATCH 108/113] mtd: fsl-quadspi: add multi flash chip R/W on + ls2080a + +There is a hardware feature that qspi_amba_base is added +internally by SOC design on ls2080a. so memmap_phy need not +be added in driver. If memmap_phy is added, the flash A1 +addr space is [0, memmap_phy] which far more than flash size. +The AMBA memory will be divided into four parts and assign to +every chipselect. Every channel will has two valid chipselects. + +Signed-off-by: Yunhui Cui <yunhui.cui@nxp.com> +--- + drivers/mtd/spi-nor/fsl-quadspi.c | 14 ++++++++++---- + 1 file changed, 10 insertions(+), 4 deletions(-) + +--- a/drivers/mtd/spi-nor/fsl-quadspi.c ++++ b/drivers/mtd/spi-nor/fsl-quadspi.c +@@ -744,11 +744,17 @@ static void fsl_qspi_set_map_addr(struct + { + int nor_size = q->nor_size; + void __iomem *base = q->iobase; ++ u32 mem_base; + +- qspi_writel(q, nor_size + q->memmap_phy, base + QUADSPI_SFA1AD); +- qspi_writel(q, nor_size * 2 + q->memmap_phy, base + QUADSPI_SFA2AD); +- qspi_writel(q, nor_size * 3 + q->memmap_phy, base + QUADSPI_SFB1AD); +- qspi_writel(q, nor_size * 4 + q->memmap_phy, base + QUADSPI_SFB2AD); ++ if (has_added_amba_base_internal(q)) ++ mem_base = 0x0; ++ else ++ mem_base = q->memmap_phy; ++ ++ qspi_writel(q, nor_size + mem_base, base + QUADSPI_SFA1AD); ++ qspi_writel(q, nor_size * 2 + mem_base, base + QUADSPI_SFA2AD); ++ qspi_writel(q, nor_size * 3 + mem_base, base + QUADSPI_SFB1AD); ++ qspi_writel(q, nor_size * 4 + mem_base, base + QUADSPI_SFB2AD); + } + + /* |