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-rw-r--r--arch/arc/boot/dts/axc001.dtsi6
-rw-r--r--arch/arc/boot/dts/axc003.dtsi6
-rw-r--r--arch/arc/boot/dts/axc003_idu.dtsi6
-rw-r--r--arch/arc/boot/dts/nsim_700.dts6
-rw-r--r--arch/arc/boot/dts/nsim_hs.dts6
-rw-r--r--arch/arc/boot/dts/nsim_hs_idu.dts6
-rw-r--r--arch/arc/boot/dts/nsimosci.dts6
-rw-r--r--arch/arc/boot/dts/nsimosci_hs.dts6
-rw-r--r--arch/arc/boot/dts/nsimosci_hs_idu.dts6
-rw-r--r--arch/arc/boot/dts/vdk_axc003.dtsi6
-rw-r--r--arch/arc/boot/dts/vdk_axc003_idu.dtsi6
-rw-r--r--arch/arc/plat-axs10x/axs10x.c14
12 files changed, 79 insertions, 1 deletions
diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi
index e7a83d19c5a3..40bcecfc3687 100644
--- a/arch/arc/boot/dts/axc001.dtsi
+++ b/arch/arc/boot/dts/axc001.dtsi
@@ -26,6 +26,12 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <750000000>;
+ };
+
core_intc: arc700-intc@cpu {
compatible = "snps,arc700-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/axc003.dtsi b/arch/arc/boot/dts/axc003.dtsi
index b0e3ccdf8fc7..cabe0deeb2d8 100644
--- a/arch/arc/boot/dts/axc003.dtsi
+++ b/arch/arc/boot/dts/axc003.dtsi
@@ -25,6 +25,12 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <90000000>;
+ };
+
core_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi
index f87ae409c8ed..8955881db794 100644
--- a/arch/arc/boot/dts/axc003_idu.dtsi
+++ b/arch/arc/boot/dts/axc003_idu.dtsi
@@ -25,6 +25,12 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <90000000>;
+ };
+
core_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsim_700.dts b/arch/arc/boot/dts/nsim_700.dts
index 987921f711c1..5d5e373e0ebc 100644
--- a/arch/arc/boot/dts/nsim_700.dts
+++ b/arch/arc/boot/dts/nsim_700.dts
@@ -32,6 +32,12 @@
/* child and parent address space 1:1 mapped */
ranges;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <80000000>;
+ };
+
core_intc: interrupt-controller {
compatible = "snps,arc700-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsim_hs.dts b/arch/arc/boot/dts/nsim_hs.dts
index d2f60f826bd2..bf05fe5f67b0 100644
--- a/arch/arc/boot/dts/nsim_hs.dts
+++ b/arch/arc/boot/dts/nsim_hs.dts
@@ -39,6 +39,12 @@
bus addr, parent bus addr, size */
ranges = <0x80000000 0x0 0x80000000 0x80000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <80000000>;
+ };
+
core_intc: core-interrupt-controller {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsim_hs_idu.dts b/arch/arc/boot/dts/nsim_hs_idu.dts
index cc82781727a1..99eabe1a2bf6 100644
--- a/arch/arc/boot/dts/nsim_hs_idu.dts
+++ b/arch/arc/boot/dts/nsim_hs_idu.dts
@@ -29,6 +29,12 @@
/* child and parent address space 1:1 mapped */
ranges;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <80000000>;
+ };
+
core_intc: core-interrupt-controller {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsimosci.dts b/arch/arc/boot/dts/nsimosci.dts
index d5a6dd9084a8..b5b060adce8a 100644
--- a/arch/arc/boot/dts/nsimosci.dts
+++ b/arch/arc/boot/dts/nsimosci.dts
@@ -35,6 +35,12 @@
/* child and parent address space 1:1 mapped */
ranges;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <20000000>;
+ };
+
core_intc: interrupt-controller {
compatible = "snps,arc700-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsimosci_hs.dts b/arch/arc/boot/dts/nsimosci_hs.dts
index 983f6915d4ae..325e73090a18 100644
--- a/arch/arc/boot/dts/nsimosci_hs.dts
+++ b/arch/arc/boot/dts/nsimosci_hs.dts
@@ -35,6 +35,12 @@
/* child and parent address space 1:1 mapped */
ranges;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <20000000>;
+ };
+
core_intc: core-interrupt-controller {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/nsimosci_hs_idu.dts b/arch/arc/boot/dts/nsimosci_hs_idu.dts
index fd675303f792..ee03d7126581 100644
--- a/arch/arc/boot/dts/nsimosci_hs_idu.dts
+++ b/arch/arc/boot/dts/nsimosci_hs_idu.dts
@@ -33,6 +33,12 @@
/* child and parent address space 1:1 mapped */
ranges;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <5000000>;
+ };
+
core_intc: core-interrupt-controller {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/vdk_axc003.dtsi b/arch/arc/boot/dts/vdk_axc003.dtsi
index 035759ee62a5..ad4ee43bd2ac 100644
--- a/arch/arc/boot/dts/vdk_axc003.dtsi
+++ b/arch/arc/boot/dts/vdk_axc003.dtsi
@@ -25,6 +25,12 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ };
+
core_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/boot/dts/vdk_axc003_idu.dtsi b/arch/arc/boot/dts/vdk_axc003_idu.dtsi
index 90e18f404889..a3cb6263c581 100644
--- a/arch/arc/boot/dts/vdk_axc003_idu.dtsi
+++ b/arch/arc/boot/dts/vdk_axc003_idu.dtsi
@@ -26,6 +26,12 @@
ranges = <0x00000000 0xf0000000 0x10000000>;
+ core_clk: core_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <50000000>;
+ };
+
core_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index 8e7f50a8b857..f90fac271d16 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -14,7 +14,9 @@
*
*/
+#include <linux/of_fdt.h>
#include <linux/of_platform.h>
+#include <linux/libfdt.h>
#include <asm/asm-offsets.h>
#include <asm/clk.h>
@@ -389,7 +391,12 @@ axs103_set_freq(unsigned int id, unsigned int fd, unsigned int od)
static void __init axs103_early_init(void)
{
- u32 freq = arc_get_core_freq(), orig = freq;
+ int offset = fdt_path_offset(initial_boot_params, "/cpu_card/core_clk");
+ const struct fdt_property *prop = fdt_get_property(initial_boot_params,
+ offset,
+ "clock-frequency",
+ NULL);
+ u32 freq = be32_to_cpu(*(u32*)(prop->data)) / 1000000, orig = freq;
/*
* AXS103 configurations for SMP/QUAD configurations share device tree
@@ -438,8 +445,13 @@ static void __init axs103_early_init(void)
}
pr_info("Freq is %dMHz\n", freq);
+
+ /* Patching .dtb in-place with new core clock value */
if (freq != orig ) {
arc_set_core_freq(freq * 1000000);
+ freq = cpu_to_be32(freq * 1000000);
+ fdt_setprop_inplace(initial_boot_params, offset,
+ "clock-frequency", &freq, sizeof(freq));
}
/* Memory maps already config in pre-bootloader */
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