From 3172225d45bd918a5c4865e7cd8eb0c9d79f8530 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 16 Sep 2020 21:41:17 -0300 Subject: [PATCH] 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 Acked-by: Arnd Bergmann Signed-off-by: Shawn Guo --- arch/arm/mach-imx/cpu-imx31.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) 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 +#include #include #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++) -- 2.11.0