linux-kernel - Re: [PATCH v7 09/14] dt-bindings: iommu/rockchip: Add clock property

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Date:   Wed, 7 Mar 2018 13:01:37 +0000
From:   Robin Murphy <robin.murphy@....com>
To:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-kernel@...r.kernel.org
Cc:     jcliang@...omium.org, xxm@...k-chips.com, tfiga@...omium.org,
        devicetree@...r.kernel.org, Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Joerg Roedel <joro@...tes.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v7 09/14] dt-bindings: iommu/rockchip: Add clock property

On 06/03/18 03:21, Jeffy Chen wrote:
> Add clock property, since we are going to control clocks in rockchip
> iommu driver.

Reviewed-by: Robin Murphy <robin.murphy@....com>

> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
> 
> Changes in v7: None
> Changes in v6:
> Fix dt-binding as Robin suggested.
> Use aclk and iface clk as Rob and Robin suggested, and split binding
> patch.
> 
> Changes in v5: None
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>   Documentation/devicetree/bindings/iommu/rockchip,iommu.txt | 7 +++++++
>   1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> index 2098f7732264..6ecefea1c6f9 100644
> --- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> @@ -14,6 +14,11 @@ Required properties:
>                       "single-master" device, and needs no additional information
>                       to associate with its master device.  See:
>                       Documentation/devicetree/bindings/iommu/iommu.txt
> +- clocks          : A list of clocks required for the IOMMU to be accessible by
> +                    the host CPU.
> +- clock-names     : Should contain the following:
> +	"iface" - Main peripheral bus clock (PCLK/HCL) (required)
> +	"aclk"  - AXI bus clock (required)
>   
>   Optional properties:
>   - rockchip,disable-mmu-reset : Don't use the mmu reset operation.
> @@ -27,5 +32,7 @@ Example:
>   		reg = <0xff940300 0x100>;
>   		interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
>   		interrupt-names = "vopl_mmu";
> +		clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>;
> +		clock-names = "aclk", "iface";
>   		#iommu-cells = <0>;
>   	};
>