From: <Tudor.Ambarus@microchip.com>
To: <bbrezillon@kernel.org>
Cc: <alexandre.belloni@bootlin.com>, <Nicolas.Ferre@microchip.com>,
<linux-kernel@vger.kernel.org>, <Ludovic.Desroches@microchip.com>,
<broonie@kernel.org>, <linux-mtd@lists.infradead.org>,
<linux-spi@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 8/9] dt-bindings: spi: atmel-quadspi: QuadSPI driver for Microchip SAM9X60
Date: Thu, 31 Jan 2019 10:45:31 +0000 [thread overview]
Message-ID: <8e2e61fe-e0a6-b84a-643a-a29c18b5861f@microchip.com> (raw)
In-Reply-To: <20190130182958.528e5ac0@bbrezillon>
On 01/30/2019 07:30 PM, Boris Brezillon wrote:
> On Wed, 30 Jan 2019 15:08:45 +0000
> <Tudor.Ambarus@microchip.com> wrote:
>
>> From: Tudor Ambarus <tudor.ambarus@microchip.com>
>>
>> The sam9x60 qspi controller uses 2 clocks, one for the peripheral register
>> access, the other for the qspi core and phy. Both are mandatory.
>>
>> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
>> ---
>> .../devicetree/bindings/spi/atmel-quadspi.txt | 28 ++++++++++++++++++++--
>> 1 file changed, 26 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/spi/atmel-quadspi.txt b/Documentation/devicetree/bindings/spi/atmel-quadspi.txt
>> index e9dae6264d89..e7b7f297c5d7 100644
>> --- a/Documentation/devicetree/bindings/spi/atmel-quadspi.txt
>> +++ b/Documentation/devicetree/bindings/spi/atmel-quadspi.txt
>> @@ -1,14 +1,22 @@
>> * Atmel Quad Serial Peripheral Interface (QSPI)
>>
>> Required properties:
>> -- compatible: Should be "atmel,sama5d2-qspi".
>> +- compatible: Should be one of the following
>> + - "atmel,sama5d2-qspi"
>> + - "microchip,sam9x60-qspi"
>> - reg: Should contain the locations and lengths of the base registers
>> and the mapped memory.
>> - reg-names: Should contain the resource reg names:
>> - qspi_base: configuration register address space
>> - qspi_mmap: memory mapped address space
>> - interrupts: Should contain the interrupt for the device.
>> -- clocks: The phandle of the clock needed by the QSPI controller.
>> +- clocks: - "atmel,sama5d2-qspi": the phandle of the clock needed by the
>> + QSPI controller.
>> + - "microchip,sam9x60-qspi": should reference the peripheral
>> + and system QSPI clocks.
>> +- clock-names: Only for sam9x60 - should contain two strigs:
>
> ^strings
>
> And I think naming clocks even for sama5d2 is a good practice, so I'd
> suggest making "pclk" mandatory even if you support unnamed clk in the
> driver to be backward compatible with old DTs.
agreed
>
>> + - "pclk" for the peripheral clock
>> + - "qspick" for the system clock
>> - #address-cells: Should be <1>.
>> - #size-cells: Should be <0>.
>>
>> @@ -29,3 +37,19 @@ spi@f0020000 {
>> ...
>> };
>> };
>> +
>> +qspi@f0014000 {
>> + compatible = "microchip,sam9x60-qspi";
>> + reg = <0xf0014000 0x100>, <0x70000000 0x08000000>;
>> + reg-names = "qspi_base", "qspi_mmap";
>> + interrupts = <35 IRQ_TYPE_LEVEL_HIGH 7>;
>> + clocks = <&pmc PMC_TYPE_PERIPHERAL 35>, <&pmc PMC_TYPE_SYSTEM 19>;
>> + clock-names = "pclk", "qspick";
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + pinctrl-names = "default";
>> +
>> + flash@0 {
>> + ...
>> + };
>> +};
>
> No need to add one example per compat, especially when all that
> changes is the compat string and an extra clk.
ok, thanks!
ta
next prev parent reply other threads:[~2019-01-31 10:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-30 15:08 [PATCH 0/9] spi: atmel-quadspi: introduce sam9x60 qspi contoller Tudor.Ambarus
2019-01-30 15:08 ` [PATCH 1/9] spi: atmel-quadspi: optimize qspi init Tudor.Ambarus
2019-01-30 17:15 ` Boris Brezillon
2019-01-31 10:42 ` Tudor.Ambarus
2019-01-30 15:08 ` [PATCH 2/9] spi: atmel-quadspi: order header files inclusion alphabetically Tudor.Ambarus
2019-01-30 17:16 ` Boris Brezillon
2019-01-30 15:08 ` [PATCH 3/9] spi: atmel-quadspi: fix naming scheme Tudor.Ambarus
2019-01-30 17:19 ` Boris Brezillon
2019-01-31 10:43 ` Tudor.Ambarus
2019-01-30 15:08 ` [PATCH 4/9] spi: atmel-quadspi: remove unnecessary cast Tudor.Ambarus
2019-01-30 17:20 ` Boris Brezillon
2019-01-30 15:08 ` [PATCH 5/9] spi: atmel-quadspi: return appropriate error code Tudor.Ambarus
2019-01-30 17:21 ` Boris Brezillon
2019-01-30 15:08 ` [PATCH 6/9] spi: atmel-quadspi: switch to SPDX license identifiers Tudor.Ambarus
2019-01-30 17:23 ` Boris Brezillon
2019-01-30 15:08 ` [PATCH 7/9] dt-bindings: spi: atmel-quadspi: update example to new clock binding Tudor.Ambarus
2019-01-30 17:25 ` Boris Brezillon
2019-01-30 15:08 ` [PATCH 8/9] dt-bindings: spi: atmel-quadspi: QuadSPI driver for Microchip SAM9X60 Tudor.Ambarus
2019-01-30 17:30 ` Boris Brezillon
2019-01-31 10:45 ` Tudor.Ambarus [this message]
2019-01-30 15:08 ` [PATCH 9/9] spi: atmel-quadspi: add support for sam9x60 qspi controller Tudor.Ambarus
2019-01-30 17:43 ` Boris Brezillon
2019-01-31 10:46 ` Tudor.Ambarus
2019-01-31 11:55 ` Boris Brezillon
2019-01-31 12:40 ` Tudor.Ambarus
2019-01-31 13:12 ` Boris Brezillon
2019-01-31 12:01 ` Boris Brezillon
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