This moves the External Bus Interface (EBI) over to a device
tree node and deletes the static mappings from the platform.
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
Documentation/devicetree/bindings/arm/arm-boards | 8 ++++
arch/arm/boot/dts/integrator.dtsi | 5 +++
arch/arm/mach-integrator/integrator_ap.c | 52 ++++++++++++++----------
arch/arm/mach-integrator/integrator_cp.c | 6 ---
4 files changed, 43 insertions(+), 28 deletions(-)
diff --git a/Documentation/devicetree/bindings/arm/arm-boards
b/Documentation/devicetree/bindings/arm/arm-boards
index 5fac246a9530..3509707f9320 100644
--- a/Documentation/devicetree/bindings/arm/arm-boards
+++ b/Documentation/devicetree/bindings/arm/arm-boards
@@ -14,6 +14,9 @@ Required nodes:
- core-module: the root node to the Integrator platforms must have
a core-module with regs and the compatible string
"arm,core-module-integrator"
+- external-bus-interface: the root node to the Integrator platforms
+ must have an external bus interface with regs and the
+ compatible-string "arm,external-bus-interface"
Required properties for the core module:
- regs: the location and size of the core module registers, one
@@ -48,6 +51,11 @@ Required nodes:
reg = <0x10000000 0x200>;
};
+ ebi@12000000 {
+ compatible = "arm,external-bus-interface";
+ reg = <0x12000000 0x100>;
+ };
+
syscon {
compatible = "arm,integrator-ap-syscon";
reg = <0x11000000 0x100>;
diff --git a/arch/arm/boot/dts/integrator.dtsi
b/arch/arm/boot/dts/integrator.dtsi
index 0f06f8687b0b..88e3d477bf16 100644
--- a/arch/arm/boot/dts/integrator.dtsi
+++ b/arch/arm/boot/dts/integrator.dtsi
@@ -10,6 +10,11 @@
reg = <0x10000000 0x200>;
};
+ ebi@12000000 {
+ compatible = "arm,external-bus-interface";
+ reg = <0x12000000 0x100>;
+ };
+
timer@13000000 {
reg = <0x13000000 0x100>;
interrupt-parent = <&pic>;
diff --git a/arch/arm/mach-integrator/integrator_ap.c
b/arch/arm/mach-integrator/integrator_ap.c
index a762712bc2f2..cc1d3fe21c4e 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -63,6 +63,8 @@
/* Base address to the AP system controller */
void __iomem *ap_syscon_base;
+/* Base address to the external bus interface */
+static void __iomem *ebi_base;
/*
@@ -73,13 +75,11 @@ void __iomem *ap_syscon_base;
* just for now).
*/
#define VA_IC_BASE __io_address(INTEGRATOR_IC_BASE)
-#define VA_EBI_BASE __io_address(INTEGRATOR_EBI_BASE)
/*
* Logical Physical
* ef000000 Cache flush
* f1100000 11000000 System controller registers
- * f1200000 12000000 EBI registers
* f1300000 13000000 Counter/Timer
* f1400000 14000000 Interrupt controller
* f1600000 16000000 UART 0
@@ -90,11 +90,6 @@ void __iomem *ap_syscon_base;
static struct map_desc ap_io_desc[] __initdata __maybe_unused = {
{
- .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
.length = SZ_4K,
@@ -168,9 +163,6 @@ device_initcall(irq_syscore_init);
/*
* Flash handling.
*/
-#define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET)
-#define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET)
-
static int ap_flash_init(struct platform_device *dev)
{
u32 tmp;
@@ -178,13 +170,15 @@ static int ap_flash_init(struct platform_device *dev)
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP,
ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET);
- tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE;
- writel(tmp, EBI_CSR1);
+ tmp = readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) |
+ INTEGRATOR_EBI_WRITE_ENABLE;
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
- if (!(readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE)) {
- writel(0xa05f, EBI_LOCK);
- writel(tmp, EBI_CSR1);
- writel(0, EBI_LOCK);
+ if (!(readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET)
+ & INTEGRATOR_EBI_WRITE_ENABLE)) {
+ writel(0xa05f, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
+ writel(0, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
}
return 0;
}
@@ -196,13 +190,15 @@ static void ap_flash_exit(struct platform_device *dev)
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP,
ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET);
- tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE;
- writel(tmp, EBI_CSR1);
+ tmp = readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) &
+ ~INTEGRATOR_EBI_WRITE_ENABLE;
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
- if (readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE) {
- writel(0xa05f, EBI_LOCK);
- writel(tmp, EBI_CSR1);
- writel(0, EBI_LOCK);
+ if (readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) &
+ INTEGRATOR_EBI_WRITE_ENABLE) {
+ writel(0xa05f, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
+ writel(0, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
}
}
@@ -469,11 +465,17 @@ static const struct of_device_id ap_syscon_match[] = {
{ },
};
+static const struct of_device_id ebi_match[] = {
+ { .compatible = "arm,external-bus-interface"},
+ { },
+};
+
static void __init ap_init_of(void)
{
unsigned long sc_dec;
struct device_node *root;
struct device_node *syscon;
+ struct device_node *ebi;
struct device *parent;
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
@@ -489,10 +491,16 @@ static void __init ap_init_of(void)
syscon = of_find_matching_node(root, ap_syscon_match);
if (!syscon)
return;
+ ebi = of_find_matching_node(root, ebi_match);
+ if (!ebi)
+ return;
ap_syscon_base = of_iomap(syscon, 0);
if (!ap_syscon_base)
return;
+ ebi_base = of_iomap(ebi, 0);
+ if (!ebi_base)
+ return;
ap_sc_id = readl(ap_syscon_base);
diff --git a/arch/arm/mach-integrator/integrator_cp.c
b/arch/arm/mach-integrator/integrator_cp.c
index 916c0f345a3a..5e84149d1790 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -64,7 +64,6 @@ static void __iomem *intcp_con_base;
/*
* Logical Physical
- * f1200000 12000000 EBI registers
* f1300000 13000000 Counter/Timer
* f1400000 14000000 Interrupt controller
* f1600000 16000000 UART 0
@@ -76,11 +75,6 @@ static void __iomem *intcp_con_base;
static struct map_desc intcp_io_desc[] __initdata __maybe_unused = {
{
- .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
.length = SZ_4K,
--
1.8.3.1
--
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