From: Jacky Bai <[email protected]>
The i.MX8DXL is a device targeting the automotive and industrial
market segments. The flexibility of the architecture allows for
use in a wide variety of general embedded applications. The chip
is designed to achieve both high performance and low power consumption.
The chip relies on the power efficient dual (2x) Cortex-A35 cluster.
Add the reserved memory node property for dsp reserved memory,
the wakeup-irq property for SCU node, the imx ion, the rpmsg and the
cm4 rproc support.
Signed-off-by: Jacky Bai <[email protected]>
Signed-off-by: Abel Vesa <[email protected]>
---
arch/arm64/boot/dts/freescale/imx8dxl.dtsi | 245 +++++++++++++++++++++
1 file changed, 245 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8dxl.dtsi
diff --git a/arch/arm64/boot/dts/freescale/imx8dxl.dtsi b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
new file mode 100644
index 000000000000..f16f88882c39
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019-2021 NXP
+ */
+
+#include <dt-bindings/clock/imx8-clock.h>
+#include <dt-bindings/firmware/imx/rsrc.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/pads-imx8dxl.h>
+#include <dt-bindings/thermal/thermal.h>
+
+/ {
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ aliases {
+ ethernet0 = &fec1;
+ ethernet1 = &eqos;
+ gpio0 = &lsio_gpio0;
+ gpio1 = &lsio_gpio1;
+ gpio2 = &lsio_gpio2;
+ gpio3 = &lsio_gpio3;
+ gpio4 = &lsio_gpio4;
+ gpio5 = &lsio_gpio5;
+ gpio6 = &lsio_gpio6;
+ gpio7 = &lsio_gpio7;
+ i2c2 = &i2c2;
+ i2c3 = &i2c3;
+ mmc0 = &usdhc1;
+ mmc1 = &usdhc2;
+ mu1 = &lsio_mu1;
+ serial0 = &lpuart0;
+ serial1 = &lpuart1;
+ serial2 = &lpuart2;
+ serial3 = &lpuart3;
+ };
+
+ cpus: cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ /* We have 1 clusters with 2 Cortex-A35 cores */
+ A35_0: cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ next-level-cache = <&A35_L2>;
+ clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
+ #cooling-cells = <2>;
+ operating-points-v2 = <&a35_opp_table>;
+ };
+
+ A35_1: cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x1>;
+ enable-method = "psci";
+ next-level-cache = <&A35_L2>;
+ clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
+ #cooling-cells = <2>;
+ operating-points-v2 = <&a35_opp_table>;
+ };
+
+ A35_L2: l2-cache0 {
+ compatible = "cache";
+ };
+ };
+
+ a35_opp_table: opp-table {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-900000000 {
+ opp-hz = /bits/ 64 <900000000>;
+ opp-microvolt = <1000000>;
+ clock-latency-ns = <150000>;
+ };
+
+ opp-1200000000 {
+ opp-hz = /bits/ 64 <1200000000>;
+ opp-microvolt = <1100000>;
+ clock-latency-ns = <150000>;
+ opp-suspend;
+ };
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ dsp_reserved: dsp@92400000 {
+ reg = <0 0x92400000 0 0x2000000>;
+ no-map;
+ };
+ };
+
+ gic: interrupt-controller@51a00000 {
+ compatible = "arm,gic-v3";
+ reg = <0x0 0x51a00000 0 0x10000>, /* GIC Dist */
+ <0x0 0x51b00000 0 0xc0000>; /* GICR (RD_base + SGI_base) */
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ pmu {
+ compatible = "arm,armv8-pmuv3";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+
+ scu {
+ compatible = "fsl,imx-scu";
+ mbox-names = "tx0",
+ "rx0",
+ "gip3";
+ mboxes = <&lsio_mu1 0 0
+ &lsio_mu1 1 0
+ &lsio_mu1 3 3>;
+
+ pd: imx8dxl-pd {
+ compatible = "fsl,imx8dxl-scu-pd", "fsl,scu-pd";
+ #power-domain-cells = <1>;
+ };
+
+ clk: clock-controller {
+ compatible = "fsl,imx8dxl-clk", "fsl,scu-clk";
+ #clock-cells = <2>;
+ clocks = <&xtal32k &xtal24m>;
+ clock-names = "xtal_32KHz", "xtal_24Mhz";
+ };
+
+ iomuxc: pinctrl {
+ compatible = "fsl,imx8dxl-iomuxc";
+ };
+
+ ocotp: imx8qx-ocotp {
+ compatible = "fsl,imx8dxl-scu-ocotp", "fsl,imx8qxp-scu-ocotp";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ fec_mac0: mac@2c4 {
+ reg = <0x2c4 6>;
+ };
+
+ fec_mac1: mac@2c6 {
+ reg = <0x2c6 6>;
+ };
+ };
+
+ watchdog {
+ compatible = "fsl,imx-sc-wdt";
+ timeout-sec = <60>;
+ };
+
+ tsens: thermal-sensor {
+ compatible = "fsl,imx-sc-thermal";
+ #thermal-sensor-cells = <1>;
+ };
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* Physical Secure */
+ <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* Physical Non-Secure */
+ <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* Virtual */
+ <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; /* Hypervisor */
+ };
+
+ thermal_zones: thermal-zones {
+ cpu-thermal0 {
+ polling-delay-passive = <250>;
+ polling-delay = <2000>;
+ thermal-sensors = <&tsens IMX_SC_R_SYSTEM>;
+
+ trips {
+ cpu_alert0: trip0 {
+ temperature = <107000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ cpu_crit0: trip1 {
+ temperature = <127000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert0>;
+ cooling-device =
+ <&A35_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&A35_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
+ clk_dummy: clock-dummy {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <0>;
+ clock-output-names = "clk_dummy";
+ };
+
+ xtal32k: clock-xtal32k {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ clock-output-names = "xtal_32KHz";
+ };
+
+ xtal24m: clock-xtal24m {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "xtal_24MHz";
+ };
+
+ sc_pwrkey: sc-powerkey {
+ compatible = "fsl,imx8-pwrkey";
+ linux,keycode = <KEY_POWER>;
+ wakeup-source;
+ };
+
+ /* sorted in register address */
+ #include "imx8-ss-adma.dtsi"
+ #include "imx8-ss-conn.dtsi"
+ #include "imx8-ss-ddr.dtsi"
+ #include "imx8-ss-lsio.dtsi"
+};
+
+#include "imx8dxl-ss-adma.dtsi"
+#include "imx8dxl-ss-conn.dtsi"
+#include "imx8dxl-ss-lsio.dtsi"
+#include "imx8dxl-ss-ddr.dtsi"
--
2.31.1
On Thu, Dec 16, 2021 at 08:48:06PM +0200, Abel Vesa wrote:
> From: Jacky Bai <[email protected]>
>
> The i.MX8DXL is a device targeting the automotive and industrial
> market segments. The flexibility of the architecture allows for
> use in a wide variety of general embedded applications. The chip
> is designed to achieve both high performance and low power consumption.
> The chip relies on the power efficient dual (2x) Cortex-A35 cluster.
>
> Add the reserved memory node property for dsp reserved memory,
> the wakeup-irq property for SCU node, the imx ion, the rpmsg and the
Not sure what "ion" is.
> cm4 rproc support.
>
> Signed-off-by: Jacky Bai <[email protected]>
> Signed-off-by: Abel Vesa <[email protected]>
> ---
> arch/arm64/boot/dts/freescale/imx8dxl.dtsi | 245 +++++++++++++++++++++
> 1 file changed, 245 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx8dxl.dtsi
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8dxl.dtsi b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
> new file mode 100644
> index 000000000000..f16f88882c39
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
> @@ -0,0 +1,245 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2019-2021 NXP
> + */
> +
> +#include <dt-bindings/clock/imx8-clock.h>
> +#include <dt-bindings/firmware/imx/rsrc.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/pinctrl/pads-imx8dxl.h>
> +#include <dt-bindings/thermal/thermal.h>
> +
> +/ {
> + interrupt-parent = <&gic>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + aliases {
> + ethernet0 = &fec1;
> + ethernet1 = &eqos;
> + gpio0 = &lsio_gpio0;
> + gpio1 = &lsio_gpio1;
> + gpio2 = &lsio_gpio2;
> + gpio3 = &lsio_gpio3;
> + gpio4 = &lsio_gpio4;
> + gpio5 = &lsio_gpio5;
> + gpio6 = &lsio_gpio6;
> + gpio7 = &lsio_gpio7;
> + i2c2 = &i2c2;
> + i2c3 = &i2c3;
> + mmc0 = &usdhc1;
> + mmc1 = &usdhc2;
> + mu1 = &lsio_mu1;
> + serial0 = &lpuart0;
> + serial1 = &lpuart1;
> + serial2 = &lpuart2;
> + serial3 = &lpuart3;
> + };
> +
> + cpus: cpus {
> + #address-cells = <2>;
> + #size-cells = <0>;
> +
> + /* We have 1 clusters with 2 Cortex-A35 cores */
s/clusters/cluster
> + A35_0: cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a35";
> + reg = <0x0 0x0>;
> + enable-method = "psci";
> + next-level-cache = <&A35_L2>;
> + clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
> + #cooling-cells = <2>;
> + operating-points-v2 = <&a35_opp_table>;
> + };
> +
> + A35_1: cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a35";
> + reg = <0x0 0x1>;
> + enable-method = "psci";
> + next-level-cache = <&A35_L2>;
> + clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
> + #cooling-cells = <2>;
> + operating-points-v2 = <&a35_opp_table>;
> + };
> +
> + A35_L2: l2-cache0 {
> + compatible = "cache";
> + };
> + };
> +
> + a35_opp_table: opp-table {
> + compatible = "operating-points-v2";
> + opp-shared;
> +
> + opp-900000000 {
> + opp-hz = /bits/ 64 <900000000>;
> + opp-microvolt = <1000000>;
> + clock-latency-ns = <150000>;
> + };
> +
> + opp-1200000000 {
> + opp-hz = /bits/ 64 <1200000000>;
> + opp-microvolt = <1100000>;
> + clock-latency-ns = <150000>;
> + opp-suspend;
> + };
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + dsp_reserved: dsp@92400000 {
> + reg = <0 0x92400000 0 0x2000000>;
> + no-map;
> + };
> + };
> +
> + gic: interrupt-controller@51a00000 {
> + compatible = "arm,gic-v3";
> + reg = <0x0 0x51a00000 0 0x10000>, /* GIC Dist */
> + <0x0 0x51b00000 0 0xc0000>; /* GICR (RD_base + SGI_base) */
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + psci {
> + compatible = "arm,psci-1.0";
> + method = "smc";
> + };
> +
> + scu {
> + compatible = "fsl,imx-scu";
> + mbox-names = "tx0",
> + "rx0",
> + "gip3";
> + mboxes = <&lsio_mu1 0 0
> + &lsio_mu1 1 0
> + &lsio_mu1 3 3>;
> +
> + pd: imx8dxl-pd {
> + compatible = "fsl,imx8dxl-scu-pd", "fsl,scu-pd";
> + #power-domain-cells = <1>;
> + };
> +
> + clk: clock-controller {
> + compatible = "fsl,imx8dxl-clk", "fsl,scu-clk";
> + #clock-cells = <2>;
> + clocks = <&xtal32k &xtal24m>;
> + clock-names = "xtal_32KHz", "xtal_24Mhz";
> + };
> +
> + iomuxc: pinctrl {
> + compatible = "fsl,imx8dxl-iomuxc";
> + };
> +
> + ocotp: imx8qx-ocotp {
> + compatible = "fsl,imx8dxl-scu-ocotp", "fsl,imx8qxp-scu-ocotp";
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + fec_mac0: mac@2c4 {
> + reg = <0x2c4 6>;
> + };
> +
> + fec_mac1: mac@2c6 {
> + reg = <0x2c6 6>;
> + };
> + };
> +
> + watchdog {
> + compatible = "fsl,imx-sc-wdt";
> + timeout-sec = <60>;
> + };
> +
> + tsens: thermal-sensor {
> + compatible = "fsl,imx-sc-thermal";
> + #thermal-sensor-cells = <1>;
> + };
> + };
> +
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* Physical Secure */
> + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* Physical Non-Secure */
> + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* Virtual */
> + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; /* Hypervisor */
> + };
> +
> + thermal_zones: thermal-zones {
> + cpu-thermal0 {
> + polling-delay-passive = <250>;
> + polling-delay = <2000>;
> + thermal-sensors = <&tsens IMX_SC_R_SYSTEM>;
> +
> + trips {
> + cpu_alert0: trip0 {
> + temperature = <107000>;
> + hysteresis = <2000>;
> + type = "passive";
> + };
Have a newline between nodes.
> + cpu_crit0: trip1 {
> + temperature = <127000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };
> + cooling-maps {
> + map0 {
> + trip = <&cpu_alert0>;
> + cooling-device =
> + <&A35_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&A35_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> + };
> + };
> +
> + clk_dummy: clock-dummy {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <0>;
> + clock-output-names = "clk_dummy";
> + };
Why do we need this?
Shawn
> +
> + xtal32k: clock-xtal32k {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <32768>;
> + clock-output-names = "xtal_32KHz";
> + };
> +
> + xtal24m: clock-xtal24m {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <24000000>;
> + clock-output-names = "xtal_24MHz";
> + };
> +
> + sc_pwrkey: sc-powerkey {
> + compatible = "fsl,imx8-pwrkey";
> + linux,keycode = <KEY_POWER>;
> + wakeup-source;
> + };
> +
> + /* sorted in register address */
> + #include "imx8-ss-adma.dtsi"
> + #include "imx8-ss-conn.dtsi"
> + #include "imx8-ss-ddr.dtsi"
> + #include "imx8-ss-lsio.dtsi"
> +};
> +
> +#include "imx8dxl-ss-adma.dtsi"
> +#include "imx8dxl-ss-conn.dtsi"
> +#include "imx8dxl-ss-lsio.dtsi"
> +#include "imx8dxl-ss-ddr.dtsi"
> --
> 2.31.1
>
On 22-01-26 20:27:49, Shawn Guo wrote:
> On Thu, Dec 16, 2021 at 08:48:06PM +0200, Abel Vesa wrote:
> > From: Jacky Bai <[email protected]>
> >
> > The i.MX8DXL is a device targeting the automotive and industrial
> > market segments. The flexibility of the architecture allows for
> > use in a wide variety of general embedded applications. The chip
> > is designed to achieve both high performance and low power consumption.
> > The chip relies on the power efficient dual (2x) Cortex-A35 cluster.
> >
> > Add the reserved memory node property for dsp reserved memory,
> > the wakeup-irq property for SCU node, the imx ion, the rpmsg and the
>
> Not sure what "ion" is.
>
Nevermind, the commit message was not updated after the imx ion was
dropped from NXP's internal tree. I'll update the commit message in the
next version.
> > cm4 rproc support.
> >
> > Signed-off-by: Jacky Bai <[email protected]>
> > Signed-off-by: Abel Vesa <[email protected]>
> > ---
> > arch/arm64/boot/dts/freescale/imx8dxl.dtsi | 245 +++++++++++++++++++++
> > 1 file changed, 245 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/freescale/imx8dxl.dtsi
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8dxl.dtsi b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
> > new file mode 100644
> > index 000000000000..f16f88882c39
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/freescale/imx8dxl.dtsi
> > @@ -0,0 +1,245 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Copyright 2019-2021 NXP
> > + */
> > +
> > +#include <dt-bindings/clock/imx8-clock.h>
> > +#include <dt-bindings/firmware/imx/rsrc.h>
> > +#include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/input/input.h>
> > +#include <dt-bindings/pinctrl/pads-imx8dxl.h>
> > +#include <dt-bindings/thermal/thermal.h>
> > +
> > +/ {
> > + interrupt-parent = <&gic>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + aliases {
> > + ethernet0 = &fec1;
> > + ethernet1 = &eqos;
> > + gpio0 = &lsio_gpio0;
> > + gpio1 = &lsio_gpio1;
> > + gpio2 = &lsio_gpio2;
> > + gpio3 = &lsio_gpio3;
> > + gpio4 = &lsio_gpio4;
> > + gpio5 = &lsio_gpio5;
> > + gpio6 = &lsio_gpio6;
> > + gpio7 = &lsio_gpio7;
> > + i2c2 = &i2c2;
> > + i2c3 = &i2c3;
> > + mmc0 = &usdhc1;
> > + mmc1 = &usdhc2;
> > + mu1 = &lsio_mu1;
> > + serial0 = &lpuart0;
> > + serial1 = &lpuart1;
> > + serial2 = &lpuart2;
> > + serial3 = &lpuart3;
> > + };
> > +
> > + cpus: cpus {
> > + #address-cells = <2>;
> > + #size-cells = <0>;
> > +
> > + /* We have 1 clusters with 2 Cortex-A35 cores */
>
> s/clusters/cluster
>
Fixed in the next version.
> > + A35_0: cpu@0 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a35";
> > + reg = <0x0 0x0>;
> > + enable-method = "psci";
> > + next-level-cache = <&A35_L2>;
> > + clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
> > + #cooling-cells = <2>;
> > + operating-points-v2 = <&a35_opp_table>;
> > + };
> > +
> > + A35_1: cpu@1 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a35";
> > + reg = <0x0 0x1>;
> > + enable-method = "psci";
> > + next-level-cache = <&A35_L2>;
> > + clocks = <&clk IMX_SC_R_A35 IMX_SC_PM_CLK_CPU>;
> > + #cooling-cells = <2>;
> > + operating-points-v2 = <&a35_opp_table>;
> > + };
> > +
> > + A35_L2: l2-cache0 {
> > + compatible = "cache";
> > + };
> > + };
> > +
> > + a35_opp_table: opp-table {
> > + compatible = "operating-points-v2";
> > + opp-shared;
> > +
> > + opp-900000000 {
> > + opp-hz = /bits/ 64 <900000000>;
> > + opp-microvolt = <1000000>;
> > + clock-latency-ns = <150000>;
> > + };
> > +
> > + opp-1200000000 {
> > + opp-hz = /bits/ 64 <1200000000>;
> > + opp-microvolt = <1100000>;
> > + clock-latency-ns = <150000>;
> > + opp-suspend;
> > + };
> > + };
> > +
> > + reserved-memory {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
> > +
> > + dsp_reserved: dsp@92400000 {
> > + reg = <0 0x92400000 0 0x2000000>;
> > + no-map;
> > + };
> > + };
> > +
> > + gic: interrupt-controller@51a00000 {
> > + compatible = "arm,gic-v3";
> > + reg = <0x0 0x51a00000 0 0x10000>, /* GIC Dist */
> > + <0x0 0x51b00000 0 0xc0000>; /* GICR (RD_base + SGI_base) */
> > + #interrupt-cells = <3>;
> > + interrupt-controller;
> > + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> > + };
> > +
> > + pmu {
> > + compatible = "arm,armv8-pmuv3";
> > + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
> > + };
> > +
> > + psci {
> > + compatible = "arm,psci-1.0";
> > + method = "smc";
> > + };
> > +
> > + scu {
> > + compatible = "fsl,imx-scu";
> > + mbox-names = "tx0",
> > + "rx0",
> > + "gip3";
> > + mboxes = <&lsio_mu1 0 0
> > + &lsio_mu1 1 0
> > + &lsio_mu1 3 3>;
> > +
> > + pd: imx8dxl-pd {
> > + compatible = "fsl,imx8dxl-scu-pd", "fsl,scu-pd";
> > + #power-domain-cells = <1>;
> > + };
> > +
> > + clk: clock-controller {
> > + compatible = "fsl,imx8dxl-clk", "fsl,scu-clk";
> > + #clock-cells = <2>;
> > + clocks = <&xtal32k &xtal24m>;
> > + clock-names = "xtal_32KHz", "xtal_24Mhz";
> > + };
> > +
> > + iomuxc: pinctrl {
> > + compatible = "fsl,imx8dxl-iomuxc";
> > + };
> > +
> > + ocotp: imx8qx-ocotp {
> > + compatible = "fsl,imx8dxl-scu-ocotp", "fsl,imx8qxp-scu-ocotp";
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > +
> > + fec_mac0: mac@2c4 {
> > + reg = <0x2c4 6>;
> > + };
> > +
> > + fec_mac1: mac@2c6 {
> > + reg = <0x2c6 6>;
> > + };
> > + };
> > +
> > + watchdog {
> > + compatible = "fsl,imx-sc-wdt";
> > + timeout-sec = <60>;
> > + };
> > +
> > + tsens: thermal-sensor {
> > + compatible = "fsl,imx-sc-thermal";
> > + #thermal-sensor-cells = <1>;
> > + };
> > + };
> > +
> > + timer {
> > + compatible = "arm,armv8-timer";
> > + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* Physical Secure */
> > + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* Physical Non-Secure */
> > + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* Virtual */
> > + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; /* Hypervisor */
> > + };
> > +
> > + thermal_zones: thermal-zones {
> > + cpu-thermal0 {
> > + polling-delay-passive = <250>;
> > + polling-delay = <2000>;
> > + thermal-sensors = <&tsens IMX_SC_R_SYSTEM>;
> > +
> > + trips {
> > + cpu_alert0: trip0 {
> > + temperature = <107000>;
> > + hysteresis = <2000>;
> > + type = "passive";
> > + };
>
> Have a newline between nodes.
>
Fixed in the next version.
> > + cpu_crit0: trip1 {
> > + temperature = <127000>;
> > + hysteresis = <2000>;
> > + type = "critical";
> > + };
> > + };
> > + cooling-maps {
> > + map0 {
> > + trip = <&cpu_alert0>;
> > + cooling-device =
> > + <&A35_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> > + <&A35_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + clk_dummy: clock-dummy {
> > + compatible = "fixed-clock";
> > + #clock-cells = <0>;
> > + clock-frequency = <0>;
> > + clock-output-names = "clk_dummy";
> > + };
>
> Why do we need this?
>
The following comment is found in imx8dxl-ss-conn.dtsi:
/*
* usbotg1 and usbotg2 share one clcok
* scfw disable clock access and keep it always on
* in case other core (M4) use one of these.
*/
So I guess it is basically a hack to allow both usbotg instances
to have a shared clock, while the clock is handled by the
SCU.
Also, the venndor tree seems to be making use of this dummy clock
in a lot of dts nodes. Even on QXP and QM.
> Shawn
>
> > +
> > + xtal32k: clock-xtal32k {
> > + compatible = "fixed-clock";
> > + #clock-cells = <0>;
> > + clock-frequency = <32768>;
> > + clock-output-names = "xtal_32KHz";
> > + };
> > +
> > + xtal24m: clock-xtal24m {
> > + compatible = "fixed-clock";
> > + #clock-cells = <0>;
> > + clock-frequency = <24000000>;
> > + clock-output-names = "xtal_24MHz";
> > + };
> > +
> > + sc_pwrkey: sc-powerkey {
> > + compatible = "fsl,imx8-pwrkey";
> > + linux,keycode = <KEY_POWER>;
> > + wakeup-source;
> > + };
> > +
> > + /* sorted in register address */
> > + #include "imx8-ss-adma.dtsi"
> > + #include "imx8-ss-conn.dtsi"
> > + #include "imx8-ss-ddr.dtsi"
> > + #include "imx8-ss-lsio.dtsi"
> > +};
> > +
> > +#include "imx8dxl-ss-adma.dtsi"
> > +#include "imx8dxl-ss-conn.dtsi"
> > +#include "imx8dxl-ss-lsio.dtsi"
> > +#include "imx8dxl-ss-ddr.dtsi"
> > --
> > 2.31.1
> >