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SubjectRe: [PATCH 07/11] irqchip: stm32: add stm32mp1 support with hierarchy domain
On Thu, Apr 26, 2018 at 06:18:30PM +0200, Ludovic Barre wrote:
> From: Ludovic Barre <ludovic.barre@st.com>
>
> Exti controller has been differently integrated on stm32mp1 SoC.
> A parent irq has only one external interrupt. A hierachy domain could
> be used. Handlers are call by parent, each parent interrupt could be
> masked and unmasked according to the needs.
>
> Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
> ---
> .../interrupt-controller/st,stm32-exti.txt | 3 +
> drivers/irqchip/irq-stm32-exti.c | 322 +++++++++++++++++++++
> 2 files changed, 325 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
> index edf03f0..136bd61 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
> +++ b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
> @@ -5,11 +5,14 @@ Required properties:
> - compatible: Should be:
> "st,stm32-exti"
> "st,stm32h7-exti"
> + "st,stm32mp1-exti"
> - reg: Specifies base physical address and size of the registers
> - interrupt-controller: Indentifies the node as an interrupt controller
> - #interrupt-cells: Specifies the number of cells to encode an interrupt
> specifier, shall be 2
> - interrupts: interrupts references to primary interrupt controller
> + (only needed for exti controller with multiple exti under
> + same parent interrupt: st,stm32-exti and st,stm32h7-exti")
>
> Example:
>
> diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
> index b38c655..ebf7146 100644
> --- a/drivers/irqchip/irq-stm32-exti.c
> +++ b/drivers/irqchip/irq-stm32-exti.c

[...]

> +static const struct stm32_desc_irq stm32mp1_desc_irq[] = {
> + { .exti = 1, .irq_parent = 7 },
> + { .exti = 2, .irq_parent = 8 },
> + { .exti = 3, .irq_parent = 9 },
> + { .exti = 4, .irq_parent = 10 },
> + { .exti = 5, .irq_parent = 23 },
> + { .exti = 6, .irq_parent = 64 },
> + { .exti = 7, .irq_parent = 65 },
> + { .exti = 8, .irq_parent = 66 },
> + { .exti = 9, .irq_parent = 67 },
> + { .exti = 10, .irq_parent = 40 },
> + { .exti = 11, .irq_parent = 42 },
> + { .exti = 12, .irq_parent = 76 },
> + { .exti = 13, .irq_parent = 77 },
> + { .exti = 14, .irq_parent = 121 },
> + { .exti = 15, .irq_parent = 127 },
> + { .exti = 16, .irq_parent = 1 },
> + { .exti = 65, .irq_parent = 144 },
> + { .exti = 68, .irq_parent = 143 },
> + { .exti = 73, .irq_parent = 129 },
> +};

You can use an interrupt-map property rather than put this into the
driver.

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