[PATCH v3 2/2] arm64: dts: ti: k3-am65: Add general purpose timers for am65
Tony Lindgren
tony at atomide.com
Wed Sep 7 01:02:43 PDT 2022
There are 12 general purpose timers on am65 that can be used for things
like PWM using pwm-omap-dmtimer driver. There are also additional four
timers in the MCU domain that do not have interrupts routable for Linux.
We configure the timers with the 25 MHz input clock by default as the
32.768 kHz clock may not be wired on the device. We leave the MCU domain
timers clock mux unconfigured, and mark the MCU domain timers reserved.
The MCU domain timers are likely reserved by the software for the ESM
module.
Compared to am64, the timer clocks are different on am65. And the MCU
timers are at a different IO address. Then j72 adds more timers compared
to am65 with a total of 30 timers. And the j72 clocks are different.
To avoid duplication for dtsi files, eventually we may want to consider
adding timer specific shared dtsi files with the timer clocks mapped
using SoC specific files in include/dt-bindings/clock. But let's get
am65 timers usable first.
Cc: Keerthy <j-keerthy at ti.com>
Cc: Nishanth Menon <nm at ti.com>
Cc: Vignesh Raghavendra <vigneshr at ti.com>
Signed-off-by: Tony Lindgren <tony at atomide.com>
---
arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 144 +++++++++++++++++++++++
arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 45 +++++++
2 files changed, 189 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -271,6 +271,150 @@ main_spi4: spi at 2140000 {
#size-cells = <0>;
};
+ main_timer0: timer at 2400000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2400000 0x00 0x400>;
+ interrupts = <GIC_SPI 224 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 23 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 23 0>;
+ assigned-clock-parents = <&k3_clks 23 1>;
+ power-domains = <&k3_pds 23 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer1: timer at 2410000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2410000 0x00 0x400>;
+ interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 24 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 24 0>;
+ assigned-clock-parents = <&k3_clks 24 1>;
+ power-domains = <&k3_pds 24 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer2: timer at 2420000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2420000 0x00 0x400>;
+ interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 27 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 27 0>;
+ assigned-clock-parents = <&k3_clks 27 1>;
+ power-domains = <&k3_pds 27 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer3: timer at 2430000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2430000 0x00 0x400>;
+ interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 28 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 28 0>;
+ assigned-clock-parents = <&k3_clks 28 1>;
+ power-domains = <&k3_pds 28 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer4: timer at 2440000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2440000 0x00 0x400>;
+ interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 29 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 29 0>;
+ assigned-clock-parents = <&k3_clks 29 1>;
+ power-domains = <&k3_pds 29 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer5: timer at 2450000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2450000 0x00 0x400>;
+ interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 30 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 30 0>;
+ assigned-clock-parents = <&k3_clks 30 1>;
+ power-domains = <&k3_pds 30 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer6: timer at 2460000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2460000 0x00 0x400>;
+ interrupts = <GIC_SPI 230 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 31 0>;
+ assigned-clocks = <&k3_clks 31 0>;
+ assigned-clock-parents = <&k3_clks 31 1>;
+ clock-names = "fck";
+ power-domains = <&k3_pds 31 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer7: timer at 2470000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2470000 0x00 0x400>;
+ interrupts = <GIC_SPI 231 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 32 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 32 0>;
+ assigned-clock-parents = <&k3_clks 32 1>;
+ power-domains = <&k3_pds 32 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer8: timer at 2480000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2480000 0x00 0x400>;
+ interrupts = <GIC_SPI 232 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 33 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 33 0>;
+ assigned-clock-parents = <&k3_clks 33 1>;
+ power-domains = <&k3_pds 33 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer9: timer at 2490000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x2490000 0x00 0x400>;
+ interrupts = <GIC_SPI 233 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 34 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 34 0>;
+ assigned-clock-parents = <&k3_clks 34 1>;
+ power-domains = <&k3_pds 34 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer10: timer at 24a0000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x24a0000 0x00 0x400>;
+ interrupts = <GIC_SPI 234 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 25 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 25 0>;
+ assigned-clock-parents = <&k3_clks 25 1>;
+ power-domains = <&k3_pds 25 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
+ main_timer11: timer at 24b0000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x24b0000 0x00 0x400>;
+ interrupts = <GIC_SPI 235 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&k3_clks 26 0>;
+ clock-names = "fck";
+ assigned-clocks = <&k3_clks 26 0>;
+ assigned-clock-parents = <&k3_clks 26 1>;
+ power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ };
+
sdhci0: mmc at 4f80000 {
compatible = "ti,am654-sdhci-5.1";
reg = <0x0 0x4f80000 0x0 0x260>, <0x0 0x4f90000 0x0 0x134>;
diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
--- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
@@ -132,6 +132,51 @@ adc {
};
};
+ /*
+ * The MCU domain timer interrupts are routed only to the ESM module,
+ * and not currently available for Linux. The MCU domain timers are
+ * of limited use without interrupts, and likely reserved by the ESM.
+ */
+ mcu_timer0: timer at 40400000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x40400000 0x00 0x400>;
+ clocks = <&k3_clks 35 0>;
+ clock-names = "fck";
+ power-domains = <&k3_pds 35 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ status = "reserved";
+ };
+
+ mcu_timer1: timer at 40410000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x40410000 0x00 0x400>;
+ clocks = <&k3_clks 36 0>;
+ clock-names = "fck";
+ power-domains = <&k3_pds 36 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ status = "reserved";
+ };
+
+ mcu_timer2: timer at 40420000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x40420000 0x00 0x400>;
+ clocks = <&k3_clks 37 0>;
+ clock-names = "fck";
+ power-domains = <&k3_pds 37 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ status = "reserved";
+ };
+
+ mcu_timer3: timer at 40430000 {
+ compatible = "ti,am654-timer";
+ reg = <0x00 0x40430000 0x00 0x400>;
+ clocks = <&k3_clks 38 0>;
+ clock-names = "fck";
+ power-domains = <&k3_pds 38 TI_SCI_PD_EXCLUSIVE>;
+ ti,timer-pwm;
+ status = "reserved";
+ };
+
mcu_navss: bus at 28380000 {
compatible = "simple-mfd";
#address-cells = <2>;
--
2.37.1
More information about the linux-arm-kernel
mailing list