From: Rob Herring <robh+dt@kernel.org>
To: Baolin Wang <baolin.wang@linaro.org>
Cc: Mark Brown <broonie@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Orson Zhai <orsonzhai@gmail.com>,
Lyra Zhang <zhang.lyra@gmail.com>,
lanqing.liu@unisoc.com, linux-spi <linux-spi@vger.kernel.org>,
devicetree@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/4] dt-bindings: spi: Add the DMA properties for the SPI dma mode
Date: Mon, 21 Jan 2019 07:52:57 -0600 [thread overview]
Message-ID: <CAL_Jsq+VpO+pX0A27-v_U+4kQKXKD5O1EWrn708RDeLsqnU1ng@mail.gmail.com> (raw)
In-Reply-To: <7538d5806003b8f67e7e0d35638315974b7c2b50.1547559542.git.baolin.wang@linaro.org>
On Tue, Jan 15, 2019 at 7:47 AM Baolin Wang <baolin.wang@linaro.org> wrote:
>
> From: Lanqing Liu <lanqing.liu@spreadtrum.com>
The email address should be updated with unisoc.com.
> Add the DMA properties for the SPI dma mode.
>
> Signed-off-by: Lanqing Liu <lanqing.liu@spreadtrum.com>
> Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
> ---
> Documentation/devicetree/bindings/spi/spi-sprd.txt | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/spi/spi-sprd.txt b/Documentation/devicetree/bindings/spi/spi-sprd.txt
> index bad211a..01ef53f 100644
> --- a/Documentation/devicetree/bindings/spi/spi-sprd.txt
> +++ b/Documentation/devicetree/bindings/spi/spi-sprd.txt
> @@ -14,6 +14,12 @@ Required properties:
> address on the SPI bus. Should be set to 1.
> - #size-cells: Should be set to 0.
>
> +Optional properties:
> +dma-names: Should contain names of the SPI used DMA channel.
> +dmas: Should contain DMA channels which the SPI used sorted in the
> + same order as the dma-names property.
> +sprd,dma-slave-ids: Should contain the DMA number that the SPI hardware required.
> +
> Example:
> spi0: spi@70a00000{
> compatible = "sprd,sc9860-spi";
> @@ -21,6 +27,9 @@ spi0: spi@70a00000{
> interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> clock-names = "spi", "source","enable";
> clocks = <&clk_spi0>, <&ext_26m>, <&clk_ap_apb_gates 5>;
> + dma-names = "rx_chn", "tx_chn";
> + dmas = <&apdma 11>, <&apdma 12>;
> + sprd,dma-slave-ids = <11 12>;
When would this be different values from what's in 'dmas'?
> #address-cells = <1>;
> #size-cells = <0>;
> };
> --
> 1.7.9.5
>
next prev parent reply other threads:[~2019-01-21 14:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 13:46 [PATCH 1/4] spi: sprd: Fix the error data length in SPI read-only mode Baolin Wang
2019-01-15 13:46 ` [PATCH 2/4] spi: sprd: Add the SPI irq function for the SPI DMA mode Baolin Wang
2019-01-15 14:24 ` Mark Brown
2019-01-16 2:21 ` Baolin Wang
2019-01-15 13:46 ` [PATCH 3/4] dt-bindings: spi: Add the DMA properties for the SPI dma mode Baolin Wang
2019-01-21 13:52 ` Rob Herring [this message]
2019-01-22 2:22 ` Baolin Wang
2019-01-22 8:11 ` Geert Uytterhoeven
2019-01-22 8:43 ` Baolin Wang
2019-01-15 13:46 ` [PATCH 4/4] spi: sprd: Add DMA mode support Baolin Wang
2019-01-15 14:30 ` Mark Brown
2019-01-16 2:34 ` Baolin Wang
2019-01-15 19:08 ` Applied "spi: sprd: Fix the error data length in SPI read-only mode" to the spi tree Mark Brown
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