Re: [PATCH v3 2/2] arm64: dts: Fix broken architected timer interrupt trigger

From: Duc Dang
Date: Tue Jul 05 2016 - 00:37:10 EST

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On Mon, Jun 6, 2016 at 10:56 AM, Marc Zyngier <marc.zyngier@xxxxxxx> wrote:
> The ARM architected timer specification mandates that the interrupt
> associated with each timer is level triggered (which corresponds to
> the "counter >= comparator" condition).
>
> A number of DTs are being remarkably creative, declaring the interrupt
> to be edge triggered. A quick look at the TRM for the corresponding ARM
> CPUs clearly shows that this is wrong, and I've corrected those.
> For non-ARM designs (and in the absence of a publicly available TRM),
> I've made them active low as well, which can't be completely wrong
> as the GIC cannot disinguish between level low and level high.
>
> The respective maintainers are of course welcome to prove me wrong.
>
> While I was at it, I took the liberty to fix a couple of related issue,
> such as some spurious affinity bits on ThunderX, and their complete
> absence on ls1043a (both of which seem to be related to copy-pasting
> from other DTs).
>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> ---
> arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi | 8 ++++----
> arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 8 ++++----
> arch/arm64/boot/dts/apm/apm-storm.dtsi | 8 ++++----
> arch/arm64/boot/dts/broadcom/ns2.dtsi | 8 ++++----
> arch/arm64/boot/dts/cavium/thunder-88xx.dtsi | 8 ++++----
> arch/arm64/boot/dts/exynos/exynos7.dtsi | 8 ++++----
> arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 8 ++++----
> arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 8 ++++----
> arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi | 8 ++++----
> arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 8 ++++----
> 10 files changed, 40 insertions(+), 40 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> index 445aa67..c2b9bcb 100644
> --- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> @@ -255,10 +255,10 @@
> /* Local timer */
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 13 0xf01>,
> - <1 14 0xf01>,
> - <1 11 0xf01>,
> - <1 10 0xf01>;
> + interrupts = <1 13 0xf08>,
> + <1 14 0xf08>,
> + <1 11 0xf08>,
> + <1 10 0xf08>;
> };
>
> timer0: timer0@ffc03000 {
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> index 832815d..4d9d144 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> @@ -100,13 +100,13 @@
> timer {
> compatible = "arm,armv8-timer";
> interrupts = <GIC_PPI 13
> - (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_EDGE_RISING)>,
> + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 14
> - (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_EDGE_RISING)>,
> + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 11
> - (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_EDGE_RISING)>,
> + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 10
> - (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_EDGE_RISING)>;
> + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>;
> };
>
> xtal: xtal-clk {
> diff --git a/arch/arm64/boot/dts/apm/apm-storm.dtsi b/arch/arm64/boot/dts/apm/apm-storm.dtsi
> index 5147d76..1c4193f 100644
> --- a/arch/arm64/boot/dts/apm/apm-storm.dtsi
> +++ b/arch/arm64/boot/dts/apm/apm-storm.dtsi
> @@ -110,10 +110,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 0 0xff01>, /* Secure Phys IRQ */
> - <1 13 0xff01>, /* Non-secure Phys IRQ */
> - <1 14 0xff01>, /* Virt IRQ */
> - <1 15 0xff01>; /* Hyp IRQ */
> + interrupts = <1 0 0xff08>, /* Secure Phys IRQ */
> + <1 13 0xff08>, /* Non-secure Phys IRQ */
> + <1 14 0xff08>, /* Virt IRQ */
> + <1 15 0xff08>; /* Hyp IRQ */
> clock-frequency = <50000000>;
> };

For above changes on apm-storm.dtsi for APM X-Gene 1:

Acked-by: Duc Dang <dhdang@xxxxxxx>

Thanks,
Duc Dang.

>
> diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi b/arch/arm64/boot/dts/broadcom/ns2.dtsi
> index ec68ec1..9c2d8a7 100644
> --- a/arch/arm64/boot/dts/broadcom/ns2.dtsi
> +++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi
> @@ -88,13 +88,13 @@
> timer {
> compatible = "arm,armv8-timer";
> interrupts = <GIC_PPI 13 (GIC_CPU_MASK_RAW(0xff) |
> - IRQ_TYPE_EDGE_RISING)>,
> + IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 14 (GIC_CPU_MASK_RAW(0xff) |
> - IRQ_TYPE_EDGE_RISING)>,
> + IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 11 (GIC_CPU_MASK_RAW(0xff) |
> - IRQ_TYPE_EDGE_RISING)>,
> + IRQ_TYPE_LEVEL_LOW)>,
> <GIC_PPI 10 (GIC_CPU_MASK_RAW(0xff) |
> - IRQ_TYPE_EDGE_RISING)>;
> + IRQ_TYPE_LEVEL_LOW)>;
> };
>
> pmu {
> diff --git a/arch/arm64/boot/dts/cavium/thunder-88xx.dtsi b/arch/arm64/boot/dts/cavium/thunder-88xx.dtsi
> index 2eb9b22..382d86f 100644
> --- a/arch/arm64/boot/dts/cavium/thunder-88xx.dtsi
> +++ b/arch/arm64/boot/dts/cavium/thunder-88xx.dtsi
> @@ -354,10 +354,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 13 0xff01>,
> - <1 14 0xff01>,
> - <1 11 0xff01>,
> - <1 10 0xff01>;
> + interrupts = <1 13 8>,
> + <1 14 8>,
> + <1 11 8>,
> + <1 10 8>;
> };
>
> pmu {
> diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> index ca663df..1628315 100644
> --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> @@ -473,10 +473,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 13 0xff01>,
> - <1 14 0xff01>,
> - <1 11 0xff01>,
> - <1 10 0xff01>;
> + interrupts = <1 13 0xff08>,
> + <1 14 0xff08>,
> + <1 11 0xff08>,
> + <1 10 0xff08>;
> };
>
> pmu_system_controller: system-controller@105c0000 {
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
> index c277ba6..b92543d 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
> @@ -111,10 +111,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 13 0x1>, /* Physical Secure PPI */
> - <1 14 0x1>, /* Physical Non-Secure PPI */
> - <1 11 0x1>, /* Virtual PPI */
> - <1 10 0x1>; /* Hypervisor PPI */
> + interrupts = <1 13 0xf08>, /* Physical Secure PPI */
> + <1 14 0xf08>, /* Physical Non-Secure PPI */
> + <1 11 0xf08>, /* Virtual PPI */
> + <1 10 0xf08>; /* Hypervisor PPI */
> fsl,erratum-a008585;
> };
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> index 20d256b..b1d6bb8 100644
> --- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> @@ -122,10 +122,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>,
> - <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>,
> - <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>,
> - <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>;
> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> };
>
> odmi: odmi@300000 {
> diff --git a/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> index 9532880..5a8e0f4 100644
> --- a/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> +++ b/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> @@ -127,10 +127,10 @@
>
> timer {
> compatible = "arm,armv8-timer";
> - interrupts = <1 13 0xf01>,
> - <1 14 0xf01>,
> - <1 11 0xf01>,
> - <1 10 0xf01>;
> + interrupts = <1 13 0xf08>,
> + <1 14 0xf08>,
> + <1 11 0xf08>,
> + <1 10 0xf08>;
> };
>
> soc {
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> index e595f22..3e2e51f 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> @@ -65,10 +65,10 @@
> timer {
> compatible = "arm,armv8-timer";
> interrupt-parent = <&gic>;
> - interrupts = <1 13 0xf01>,
> - <1 14 0xf01>,
> - <1 11 0xf01>,
> - <1 10 0xf01>;
> + interrupts = <1 13 0xf08>,
> + <1 14 0xf08>,
> + <1 11 0xf08>,
> + <1 10 0xf08>;
> };
>
> amba_apu {
> --
> 2.1.4
>

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