Add the ARM PLL controller which comes standard with the Cortex-A9 found
on the BCM63138 SoCs. This is the same controller as the one found in
the Broadcom iProc architecture, however, we have a separate compatible
string to indicate the integration difference, since the hardware is
different.
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
Changes in v4:
- properly reflect the HW clocking and make it clear that periph_clk
is feeding into the ARM PLL clock domain
No changes in v2 or v3
arch/arm/boot/dts/bcm63138.dtsi | 36 ++++++++++++++++++++++++++++--------
1 file changed, 28 insertions(+), 8 deletions(-)
diff --git a/arch/arm/boot/dts/bcm63138.dtsi b/arch/arm/boot/dts/bcm63138.dtsi
index 34cd64051250..d0560e8cd6de 100644
--- a/arch/arm/boot/dts/bcm63138.dtsi
+++ b/arch/arm/boot/dts/bcm63138.dtsi
@@ -43,18 +43,31 @@
#address-cells = <1>;
#size-cells = <0>;
- arm_timer_clk: arm_timer_clk {
- #clock-cells = <0>;
- compatible = "fixed-clock";
- clock-frequency = <500000000>;
- };
-
+ /* UBUS peripheral clock */
periph_clk: periph_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <50000000>;
clock-output-names = "periph";
};
+
+ /* peripheral clock for system timer */
+ axi_clk: axi_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clocks = <&armpll>;
+ clock-div = <2>;
+ clock-mult = <1>;
+ };
+
+ /* APB bus clock */
+ apb_clk: apb_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-factor-clock";
+ clocks = <&armpll>;
+ clock-div = <4>;
+ clock-mult = <1>;
+ };
};
/* ARM bus */
@@ -93,14 +106,14 @@
compatible = "arm,cortex-a9-global-timer";
reg = <0x1e200 0x20>;
interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&arm_timer_clk>;
+ clocks = <&axi_clk>;
};
local_timer: local-timer@1e600 {
compatible = "arm,cortex-a9-twd-timer";
reg = <0x1e600 0x20>;
interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&arm_timer_clk>;
+ clocks = <&axi_clk>;
};
twd_watchdog: watchdog@1e620 {
@@ -109,6 +122,13 @@
interrupts = <GIC_PPI 14 IRQ_TYPE_LEVEL_HIGH>;
};
+ armpll: armpll {
+ #clock-cells = <0>;
+ compatible = "brcm,bcm63138-armpll";
+ clocks = <&periph_clk>;
+ reg = <0x20000 0xf00>;
+ };
+
pmb0: reset-controller@4800c0 {
compatible = "brcm,bcm63138-pmb";
reg = <0x4800c0 0x10>;
--
2.1.0
--
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