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| author | Fabio Estevam <festevam@gmail.com> | 2020-09-17 03:41:20 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2020-09-22 09:08:11 +0300 |
| commit | f68ea682d1da77e0133a7726640c22836a900a67 (patch) | |
| tree | 85804a1442f7b944d75fe71201a9a426a64ff9c0 | |
| parent | 445cf02cada4b32f95c2bbce3fdaf184ef3ff3ce (diff) | |
| download | linux-f68ea682d1da77e0133a7726640c22836a900a67.tar.xz | |
ARM: imx35: Retrieve the IIM base address from devicetree
Now that imx35 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>
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx35.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c index ebb3cdabd506..80e7d8ab9f1b 100644 --- a/arch/arm/mach-imx/cpu-imx35.c +++ b/arch/arm/mach-imx/cpu-imx35.c @@ -5,6 +5,7 @@ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> */ #include <linux/module.h> +#include <linux/of_address.h> #include <linux/io.h> #include "hardware.h" @@ -14,9 +15,15 @@ static int mx35_cpu_rev = -1; static int mx35_read_cpu_rev(void) { + void __iomem *iim_base; + struct device_node *np; u32 rev; - rev = imx_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV)); + np = of_find_compatible_node(NULL, NULL, "fsl,imx35-iim"); + iim_base = of_iomap(np, 0); + BUG_ON(!iim_base); + + rev = imx_readl(iim_base + MXC_IIMSREV); switch (rev) { case 0x00: return IMX_CHIP_REVISION_1_0; |