| Message ID | 1432633484-18758-3-git-send-email-gregory.clement@free-electrons.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | fea00e6a8b473ae35e89729af56404df176469cb |
| Headers | show |
On Tue, May 26, 2015 at 11:44:43AM +0200, Gregory CLEMENT wrote: > The commit df59fa7f4bca "spi: orion: support armada extended baud > rates" made the assumptions that all the Armada SoCs supported the > same maximum frequency. However, according the hardware datasheet, the > maximum frequency supported by the Armada 370 SoC is tclk/4, for the > Armada XP, Armada 38x and Armada 39x SoCs the limitation is 50MHz and > for the Armada 375 it is tclk/15. Applied, thanks.
> --- a/Documentation/devicetree/bindings/spi/spi-orion.txt > +++ b/Documentation/devicetree/bindings/spi/spi-orion.txt > @@ -1,7 +1,13 @@ > Marvell Orion SPI device > > Required properties: > -- compatible : should be "marvell,orion-spi" or "marvell,armada-370-spi". > +- compatible : should be on of the following: > + - "marvell,orion-spi" for the Orion, mv78x00, Kirkwood and Dove SoCs > + - "marvell,armada-370-spi", for the Armada 370 SoCs > + - "marvell,armada-375-spi", for the Armada 375 SoCs > + - "marvell,armada-380-spi", for the Armada 38x SoCs > + - "marvell,armada-390-spi", for the Armada 38x SoCs Hi Gregory Is that a typ0? Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Andrew, Mark, On 26/05/2015 14:08, Andrew Lunn wrote: >> --- a/Documentation/devicetree/bindings/spi/spi-orion.txt >> +++ b/Documentation/devicetree/bindings/spi/spi-orion.txt >> @@ -1,7 +1,13 @@ >> Marvell Orion SPI device >> >> Required properties: >> -- compatible : should be "marvell,orion-spi" or "marvell,armada-370-spi". >> +- compatible : should be on of the following: >> + - "marvell,orion-spi" for the Orion, mv78x00, Kirkwood and Dove SoCs >> + - "marvell,armada-370-spi", for the Armada 370 SoCs >> + - "marvell,armada-375-spi", for the Armada 375 SoCs >> + - "marvell,armada-380-spi", for the Armada 38x SoCs >> + - "marvell,armada-390-spi", for the Armada 38x SoCs > > Hi Gregory > > Is that a typ0? yes it is! :/ Mark do you want a new patch or do you prefer fixing the typo yourself ? it should be - "marvell,armada-390-spi", for the Armada 39x SoCs instead of - "marvell,armada-390-spi", for the Armada 38x SoCs s/38x/39x/ on this line. Thanks, Gregory > > Andrew >
On Tue, May 26, 2015 at 02:20:08PM +0200, Gregory CLEMENT wrote: > Mark do you want a new patch or do you prefer fixing the typo > yourself ? it should be I fixed it up locally (in general it's easier to just send the patch though).
Hi Mark, On 27/05/2015 19:45, Mark Brown wrote: > On Tue, May 26, 2015 at 02:20:08PM +0200, Gregory CLEMENT wrote: > >> Mark do you want a new patch or do you prefer fixing the typo >> yourself ? it should be > > I fixed it up locally (in general it's easier to just send the patch > though). > Thanks! And next time I will send a v2 then if it is easier for you. Gregory
On Wed, May 27, 2015 at 07:47:47PM +0200, Gregory CLEMENT wrote: > On 27/05/2015 19:45, Mark Brown wrote: > > I fixed it up locally (in general it's easier to just send the patch > > though). > Thanks! And next time I will send a v2 then if it is easier for you. I'd say it's just easier in general - "can you please either fix this up locally or apply this patch" means that whatever the answer is it can be acted on immediately.
diff --git a/Documentation/devicetree/bindings/spi/spi-orion.txt b/Documentation/devicetree/bindings/spi/spi-orion.txt index 50c3a3de61c1..51d63df3d99d 100644 --- a/Documentation/devicetree/bindings/spi/spi-orion.txt +++ b/Documentation/devicetree/bindings/spi/spi-orion.txt @@ -1,7 +1,13 @@ Marvell Orion SPI device Required properties: -- compatible : should be "marvell,orion-spi" or "marvell,armada-370-spi". +- compatible : should be on of the following: + - "marvell,orion-spi" for the Orion, mv78x00, Kirkwood and Dove SoCs + - "marvell,armada-370-spi", for the Armada 370 SoCs + - "marvell,armada-375-spi", for the Armada 375 SoCs + - "marvell,armada-380-spi", for the Armada 38x SoCs + - "marvell,armada-390-spi", for the Armada 38x SoCs + - "marvell,armada-xp-spi", for the Armada XP SoCs - reg : offset and length of the register set for the device - cell-index : Which of multiple SPI controllers is this. Optional properties: diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index ff97cabdaa81..8cad107a5b3f 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -391,7 +391,7 @@ static const struct orion_spi_dev orion_spi_dev_data = { .prescale_mask = ORION_SPI_CLK_PRESCALE_MASK, }; -static const struct orion_spi_dev armada_spi_dev_data = { +static const struct orion_spi_dev armada_370_spi_dev_data = { .typ = ARMADA_SPI, .min_divisor = 4, .max_divisor = 1920, @@ -399,9 +399,46 @@ static const struct orion_spi_dev armada_spi_dev_data = { .prescale_mask = ARMADA_SPI_CLK_PRESCALE_MASK, }; +static const struct orion_spi_dev armada_xp_spi_dev_data = { + .typ = ARMADA_SPI, + .max_hz = 50000000, + .max_divisor = 1920, + .prescale_mask = ARMADA_SPI_CLK_PRESCALE_MASK, +}; + +static const struct orion_spi_dev armada_375_spi_dev_data = { + .typ = ARMADA_SPI, + .min_divisor = 15, + .max_divisor = 1920, + .prescale_mask = ARMADA_SPI_CLK_PRESCALE_MASK, +}; + static const struct of_device_id orion_spi_of_match_table[] = { - { .compatible = "marvell,orion-spi", .data = &orion_spi_dev_data, }, - { .compatible = "marvell,armada-370-spi", .data = &armada_spi_dev_data, }, + { + .compatible = "marvell,orion-spi", + .data = &orion_spi_dev_data, + }, + { + .compatible = "marvell,armada-370-spi", + .data = &armada_370_spi_dev_data, + }, + { + .compatible = "marvell,armada-375-spi", + .data = &armada_375_spi_dev_data, + }, + { + .compatible = "marvell,armada-380-spi", + .data = &armada_xp_spi_dev_data, + }, + { + .compatible = "marvell,armada-390-spi", + .data = &armada_xp_spi_dev_data, + }, + { + .compatible = "marvell,armada-xp-spi", + .data = &armada_xp_spi_dev_data, + }, + {} }; MODULE_DEVICE_TABLE(of, orion_spi_of_match_table); @@ -473,9 +510,11 @@ static int orion_spi_probe(struct platform_device *pdev) "marvell,armada-370-spi")) master->max_speed_hz = min(devdata->max_hz, DIV_ROUND_UP(tclk_hz, devdata->min_divisor)); - else + else if (devdata->min_divisor) master->max_speed_hz = DIV_ROUND_UP(tclk_hz, devdata->min_divisor); + else + master->max_speed_hz = devdata->max_hz; master->min_speed_hz = DIV_ROUND_UP(tclk_hz, devdata->max_divisor); r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
The commit df59fa7f4bca "spi: orion: support armada extended baud rates" made the assumptions that all the Armada SoCs supported the same maximum frequency. However, according the hardware datasheet, the maximum frequency supported by the Armada 370 SoC is tclk/4, for the Armada XP, Armada 38x and Armada 39x SoCs the limitation is 50MHz and for the Armada 375 it is tclk/15. This patch introduces new compatible strings to handle all these case. In order to be future proof a compatible was created for each SoC even if currently some SoCs seem using the same IP. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> --- .../devicetree/bindings/spi/spi-orion.txt | 8 +++- drivers/spi/spi-orion.c | 47 ++++++++++++++++++++-- 2 files changed, 50 insertions(+), 5 deletions(-)