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authorLinus Walleij <linus.walleij@linaro.org>2015-05-14 10:29:59 +0200
committerLinus Walleij <linus.walleij@linaro.org>2015-05-18 15:07:48 +0200
commit6252bd35782a3bf636b665c0d5700dd449492ca2 (patch)
tree02eafca4953646d3e9583b46e894893cca7e0efa /arch/arm/mach-ux500
parent583ecab9e36ec3077228cc4e303276856ee7519e (diff)
downloadop-kernel-dev-6252bd35782a3bf636b665c0d5700dd449492ca2.zip
op-kernel-dev-6252bd35782a3bf636b665c0d5700dd449492ca2.tar.gz
ARM: ux500: look up PRCMU resource from DT
This removes the static map for the PRCMU in favor of looking up that resource from the device tree. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ux500')
-rw-r--r--arch/arm/mach-ux500/cpu-db8500.c18
-rw-r--r--arch/arm/mach-ux500/cpu.c20
2 files changed, 13 insertions, 25 deletions
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index fd0bc19..d9359d7 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -43,28 +43,10 @@ static struct prcmu_pdata db8500_prcmu_pdata = {
.legacy_offset = DB8500_PRCMU_LEGACY_OFFSET,
};
-/* U8500 IO map specific description */
-static struct map_desc u8500_io_desc[] __initdata = {
- __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
- __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
-
-};
-
-/* U9540 IO map specific description */
-static struct map_desc u9540_io_desc[] __initdata = {
- __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K + SZ_8K),
- __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K + SZ_8K),
-};
-
static void __init u8500_map_io(void)
{
debug_ll_io_init();
ux500_map_io();
-
- if (cpu_is_ux540_family())
- iotable_init(u9540_io_desc, ARRAY_SIZE(u9540_io_desc));
- else
- iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
}
/*
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index 6ced0f68..e31d3d6 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -16,6 +16,7 @@
#include <linux/stat.h>
#include <linux/of.h>
#include <linux/of_irq.h>
+#include <linux/of_address.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
@@ -52,31 +53,36 @@ void ux500_restart(enum reboot_mode mode, const char *cmd)
*/
void __init ux500_init_irq(void)
{
+ struct device_node *np;
+ struct resource r;
+
gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND);
irqchip_init();
+ np = of_find_compatible_node(NULL, NULL, "stericsson,db8500-prcmu");
+ of_address_to_resource(np, 0, &r);
+ of_node_put(np);
+ if (!r.start) {
+ pr_err("could not find PRCMU base resource\n");
+ return;
+ }
+ prcmu_early_init(r.start, r.end-r.start);
+ ux500_pm_init(r.start, r.end-r.start);
/*
* Init clocks here so that they are available for system timer
* initialization.
*/
if (cpu_is_u8500_family()) {
- prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
- ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
-
u8500_of_clk_init(U8500_CLKRST1_BASE,
U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE,
U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
} else if (cpu_is_u9540()) {
- prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
- ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
u9540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
} else if (cpu_is_u8540()) {
- prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
- ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
u8540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE);
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