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| author | Mark Jackson <mpfj-list@newflow.co.uk> | 2013-04-19 21:08:28 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2013-05-16 08:53:22 -0700 |
| commit | 496c8a0bbb726c2608b3b1318d231ab04a9a2ec3 (patch) | |
| tree | 2e8bea0925efe644bb64fec913329c10eb9576a1 /arch/arm/mach-omap2/gpmc.c | |
| parent | 4d5843616d16eb1a5851a976ec82b8d436233ad7 (diff) | |
| download | kernel-common-496c8a0bbb726c2608b3b1318d231ab04a9a2ec3.tar.gz kernel-common-496c8a0bbb726c2608b3b1318d231ab04a9a2ec3.tar.bz2 kernel-common-496c8a0bbb726c2608b3b1318d231ab04a9a2ec3.zip | |
ARM: OMAP2+: Allow NAND transfer mode to be specified in DT
OMAP devices support various NAND transfer modes.
Currently all device-tree definitions will use the default "prefetch
polled" mode, so this patch enables the transfer mode to be specified
in the device-tree.
Signed-off-by: Mark Jackson <mpfj@newflow.co.uk>
Acked-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/gpmc.c')
| -rw-r--r-- | arch/arm/mach-omap2/gpmc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 6c4da1254f53..a195468286f4 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1345,6 +1345,13 @@ static const char * const nand_ecc_opts[] = { [OMAP_ECC_BCH8_CODE_HW] = "bch8", }; +static const char * const nand_xfer_types[] = { + [NAND_OMAP_PREFETCH_POLLED] = "prefetch-polled", + [NAND_OMAP_POLLED] = "polled", + [NAND_OMAP_PREFETCH_DMA] = "prefetch-dma", + [NAND_OMAP_PREFETCH_IRQ] = "prefetch-irq", +}; + static int gpmc_probe_nand_child(struct platform_device *pdev, struct device_node *child) { @@ -1374,6 +1381,13 @@ static int gpmc_probe_nand_child(struct platform_device *pdev, break; } + if (!of_property_read_string(child, "ti,nand-xfer-type", &s)) + for (val = 0; val < ARRAY_SIZE(nand_xfer_types); val++) + if (!strcasecmp(s, nand_xfer_types[val])) { + gpmc_nand_data->xfer_type = val; + break; + } + val = of_get_nand_bus_width(child); if (val == 16) gpmc_nand_data->devsize = NAND_BUSWIDTH_16; |