diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2015-03-13 10:31:54 -0300 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2015-03-13 22:06:35 +0800 |
| commit | 8b88f7ef31ddecd943e3312d6b61e1b1c6eab3d0 (patch) | |
| tree | e265b117f51f5a58dc2e63b5aff55a37f8122bb5 /arch/arm/mach-imx/cpu-imx25.c | |
| parent | d8a3beea003b4c162e5713a1a86596e9296da1d7 (diff) | |
ARM: mx25: Retrieve IIM base from dt
We should use dt to retrieve the IIM base address.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx25.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx25.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpu-imx25.c b/arch/arm/mach-imx/cpu-imx25.c index 96ec64b5ff7d..d0ad67e802d3 100644 --- a/arch/arm/mach-imx/cpu-imx25.c +++ b/arch/arm/mach-imx/cpu-imx25.c @@ -11,6 +11,8 @@ */ #include <linux/module.h> #include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> #include "iim.h" #include "hardware.h" @@ -20,8 +22,15 @@ static int mx25_cpu_rev = -1; static int mx25_read_cpu_rev(void) { u32 rev; + void __iomem *iim_base; + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx25-iim"); + iim_base = of_iomap(np, 0); + BUG_ON(!iim_base); + rev = readl(iim_base + MXC_IIMSREV); + iounmap(iim_base); - rev = __raw_readl(MX25_IO_ADDRESS(MX25_IIM_BASE_ADDR + MXC_IIMSREV)); switch (rev) { case 0x00: return IMX_CHIP_REVISION_1_0; |