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| author | Roger Quadros <rogerq@ti.com> | 2014-08-29 19:11:52 +0300 |
|---|---|---|
| committer | Roger Quadros <rogerq@ti.com> | 2014-10-30 17:21:08 +0200 |
| commit | e378d22b9c27de4af4946e4e7928fef50f9a9ff7 (patch) | |
| tree | c172d639f79325e76f43d22a8e42da1cdc23e690 /arch/arm/mach-omap2 | |
| parent | 7604baf365a3bd46007be6fbd2e43ac4a46ce928 (diff) | |
| download | linux-e378d22b9c27de4af4946e4e7928fef50f9a9ff7.tar.gz linux-e378d22b9c27de4af4946e4e7928fef50f9a9ff7.tar.bz2 linux-e378d22b9c27de4af4946e4e7928fef50f9a9ff7.zip | |
ARM: OMAP2+: gpmc: Always enable A26-A11 for non NAND devices
Although RESET state of LIMITEDADDRESS bit in GPMC_CONFIG register
is 0 (i.e. A26-A11 enabled), faulty bootloaders might accidentally
set this bit. e.g. u-boot 2014.07 with CONFIG_NOR disabled.
Explicity disable LIMITEDADDRESS bit for non NAND devices so that
they can always work.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/gpmc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index f5d9dd256d63..0ba95d3e74e5 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -85,6 +85,8 @@ #define GPMC_ECC_CTRL_ECCREG8 0x008 #define GPMC_ECC_CTRL_ECCREG9 0x009 +#define GPMC_CONFIG_LIMITEDADDRESS BIT(1) + #define GPMC_CONFIG2_CSEXTRADELAY BIT(7) #define GPMC_CONFIG3_ADVEXTRADELAY BIT(7) #define GPMC_CONFIG4_OEEXTRADELAY BIT(7) @@ -1501,6 +1503,7 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, struct resource res; unsigned long base; int ret, cs; + u32 val; if (of_property_read_u32(child, "reg", &cs) < 0) { dev_err(&pdev->dev, "%s has no 'reg' property\n", @@ -1569,6 +1572,11 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, goto err; } + /* Clear limited address i.e. enable A26-A11 */ + val = gpmc_read_reg(GPMC_CONFIG); + val &= ~GPMC_CONFIG_LIMITEDADDRESS; + gpmc_write_reg(GPMC_CONFIG, val); + no_timings: if (of_platform_device_create(child, NULL, &pdev->dev)) return 0; |