From: Vignesh Raghavendra <vigneshr@ti.com>
To: "Ramuthevar,Vadivel MuruganX"
<vadivel.muruganx.ramuthevar@linux.intel.com>,
<linux-spi@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <broonie@kernel.org>, <robh+dt@kernel.org>,
<cheol.yong.kim@intel.com>, <qi-ming.wu@intel.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: spi: Add schema for Cadence QSPI Controller driver
Date: Tue, 5 Nov 2019 10:00:40 +0530 [thread overview]
Message-ID: <b553b1e8-1c35-fd7c-6855-75a4c1c943fe@ti.com> (raw)
In-Reply-To: <20191030081155.29947-2-vadivel.muruganx.ramuthevar@linux.intel.com>
Hi,
On 30/10/19 1:41 PM, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
>
> Add dt-bindings documentation for Cadence-QSPI controller to support
> spi based flash memories.
>
The new driver being added in patch 2/2 is supposed to replace
drivers/mtd/spi-nor/cadence-quadspi.c. Therefore the bindings should be
exactly same as
Documentation/devicetree/bindings/mtd/cadence-quadspi.txt. Otherwise, it
breaks DT backward compatibility. There cannot be two different sets of
bindings for same HW IP.
Therefore please rewrite yaml schema to match existing bindings at
Documentation/devicetree/bindings/mtd/cadence-quadspi.txt.
And then include a patch dropping older bindings.
> Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
> ---
> .../devicetree/bindings/spi/cadence,qspi.yaml | 65 ++++++++++++++++++++++
> 1 file changed, 65 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/spi/cadence,qspi.yaml
>
> diff --git a/Documentation/devicetree/bindings/spi/cadence,qspi.yaml b/Documentation/devicetree/bindings/spi/cadence,qspi.yaml
> new file mode 100644
> index 000000000000..295501f01e5e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/cadence,qspi.yaml
> @@ -0,0 +1,65 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/spi/cadence,qspi.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Cadence QSPI Flash Controller support
> +
> +maintainers:
> + - Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
> +
> +allOf:
> + - $ref: "spi-controller.yaml#"
> +
> +description: |
> + Add support for the Cadence QSPI controller,This controller is
> + present in the Intel LGM, Altera SoCFPGA and TI SoCs and this driver
> + has been tested On Intel's LGM SoC.
> +
> +properties:
> + compatible:
> + const: cadence,qspi
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clocks-names:
> + maxItems: 1
> +
> + resets:
> + maxItems: 1
> +
> + reset-names:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - resets
> + - reset-names
> +
> +examples:
> + - |
> + spi@ec000000 {
> + compatible = "cadence,qspi";
> + reg = <0xec000000 0x100>;
> + clocks = <&cgu0 LGM_CLK_QSPI>, <&cgu0 LGM_GCLK_QSPI>;
> + clock-names = "qspi";
> + resets = <&rcu0 0x10 1>;
> + reset-names = "qspi";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + flash: flash@1 {
> + compatible = "spi-nand", "jedec, spi-nor";
s/"jedec, spi-nor"/"jedec,spi-nor" (i.e no space after comma)
> + reg = <1>;
> + spi-max-frequency = <10000000>;
> + };
> + };
> +
>
--
Regards
Vignesh
next prev parent reply other threads:[~2019-11-05 4:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-30 8:11 [PATCH v2 0/2] spi: cadence-quadpsi: Add support for the Cadence QSPI controller Ramuthevar,Vadivel MuruganX
2019-10-30 8:11 ` [PATCH v2 1/2] dt-bindings: spi: Add schema for Cadence QSPI Controller driver Ramuthevar,Vadivel MuruganX
2019-11-05 4:30 ` Vignesh Raghavendra [this message]
2019-11-11 7:35 ` Ramuthevar, Vadivel MuruganX
2019-10-30 8:11 ` [PATCH v2 2/2] spi: cadence-quadpsi: Add support for the Cadence QSPI controller Ramuthevar,Vadivel MuruganX
2019-11-01 15:19 ` kbuild test robot
2019-11-01 15:19 ` [PATCH] spi: cadence-quadpsi: fix platform_get_irq.cocci warnings kbuild test robot
2019-11-01 17:36 ` [PATCH v2 2/2] spi: cadence-quadpsi: Add support for the Cadence QSPI controller kbuild test robot
2019-11-01 17:36 ` [RFC PATCH] spi: cadence-quadpsi: cadence_qspi_init_timeout() can be static kbuild test robot
2019-11-07 5:44 ` [PATCH v2 2/2] spi: cadence-quadpsi: Add support for the Cadence QSPI controller Vignesh Raghavendra
2019-11-11 7:32 ` Ramuthevar, Vadivel MuruganX
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