[PATCH 05/13] ARM: imx31: Retrieve the IIM base address from devicetree
flat view
STALE2207d
SUPERSEDED
From: Fabio Estevam <festevam@gmail.com>
Date: 2020-09-16 20:57:48
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Revision v1 of 2 in this series.
Revisions (2)
- v1 current
- v2 [diff vs current]
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> --- arch/arm/mach-imx/cpu-imx31.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/cpu-imx31.c b/arch/arm/mach-imx/cpu-imx31.c
index 3ee684b71006..47677da05cff 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 +33,17 @@ 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); + 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++)
--
2.17.1
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