diff options
| author | Fabio Estevam <festevam@gmail.com> | 2020-09-17 03:41:17 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2020-09-22 09:08:03 +0300 |
| commit | 3172225d45bd918a5c4865e7cd8eb0c9d79f8530 (patch) | |
| tree | 310ab4d81c5bbb2e8fad127249ee9b364708715a /arch/arm/mach-imx/cpu-imx31.c | |
| parent | d54debc72f5f836917c957dce610ec50546ec158 (diff) | |
| download | linux-3172225d45bd918a5c4865e7cd8eb0c9d79f8530.tar.xz | |
ARM: imx31: Retrieve the IIM base address from devicetree
Now that imx31 has been converted to a devicetree-only platform,
retrieve the IIM base address from devicetree.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx31.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx31.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpu-imx31.c b/arch/arm/mach-imx/cpu-imx31.c index 3ee684b71006..b9c24b851d1a 100644 --- a/arch/arm/mach-imx/cpu-imx31.c +++ b/arch/arm/mach-imx/cpu-imx31.c @@ -6,6 +6,7 @@ */ #include <linux/module.h> +#include <linux/of_address.h> #include <linux/io.h> #include "common.h" @@ -32,10 +33,16 @@ static struct { static int mx31_read_cpu_rev(void) { + void __iomem *iim_base; + struct device_node *np; u32 i, srev; + np = of_find_compatible_node(NULL, NULL, "fsl,imx31-iim"); + iim_base = of_iomap(np, 0); + BUG_ON(!iim_base); + /* read SREV register from IIM module */ - srev = imx_readl(MX31_IO_ADDRESS(MX31_IIM_BASE_ADDR + MXC_IIMSREV)); + srev = imx_readl(iim_base + MXC_IIMSREV); srev &= 0xff; for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++) |