[PATCH v2 5/5] ARM: dts: AM4372: add entry for qspi mmap region

Vignesh R
2015-11-06T12:21:10Z

On 11/06/2015 10:44 AM, Felipe Balbi wrote:
>
> Hi,
>
> Rob Herring <robh@kernel.org> writes:
>> On Tue, Nov 03, 2015 at 03:36:14PM +0530, Vignesh R wrote:
>>> Add qspi memory mapped region entries for AM43xx based SoCs. Also,
>>> update the binding documents for the controller to document this change.
>>>
>>> Signed-off-by: Vignesh R <vigneshr@ti.com>
>>
>> Acked-by: Rob Herring <robh@kernel.org>
>>
>>> ---
>>> Documentation/devicetree/bindings/spi/ti_qspi.txt | 5 +++--
>>> arch/arm/boot/dts/am4372.dtsi | 4 +++-
>>> 2 files changed, 6 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/spi/ti_qspi.txt b/Documentation/devicetree/bindings/spi/ti_qspi.txt
>>> index f05dd631bef1..05488970060b 100644
>>> --- a/Documentation/devicetree/bindings/spi/ti_qspi.txt
>>> +++ b/Documentation/devicetree/bindings/spi/ti_qspi.txt
>>> @@ -17,9 +17,10 @@ Recommended properties:
>>>
>>> Example:
>>>
>>> +For am4372:
>>> qspi: qspi at 4b300000 {
>>> - compatible = "ti,dra7xxx-qspi";
>>> - reg = <0x47900000 0x100>, <0x30000000 0x3ffffff>;
>>> + compatible = "ti,am4372-qspi";
>>> + reg = <0x47900000 0x100>, <0x30000000 0x4000000>;
>>> reg-names = "qspi_base", "qspi_mmap";
>>> #address-cells = <1>;
>>> #size-cells = <0>;
>
> and how does the user for this look like ? Don't you need to give this a
> proper 'ranges' binding ?
>

There are no other users of qspi_mmap region except ti-qspi driver itself:
In probe:
res_mmap = platform_get_resource_byname(pdev,
IORESOURCE_MEM, "qspi_mmap");
qspi->mmap_base = devm_ioremap_resource(&pdev->dev, res_mmap);

and for reading from mmap region:
memcpy_fromio(buf, qspi->mmap_base + from, len);

--
Regards
Vignesh