diff options
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx31.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx31.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/arm/mach-imx/cpu-imx31.c b/arch/arm/mach-imx/cpu-imx31.c index 3daf1959a2f0..35c544924e50 100644 --- a/arch/arm/mach-imx/cpu-imx31.c +++ b/arch/arm/mach-imx/cpu-imx31.c @@ -1,15 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * MX31 CPU type detection * * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/module.h> +#include <linux/of_address.h> #include <linux/io.h> #include "common.h" @@ -36,10 +33,17 @@ 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); + of_node_put(np); + 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++) |