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Re: [PATCH] spi: pl022: Add clk_{un}prepare() support in runtime PM
On Tue, Sep 18, 2012 at 6:09 AM, viresh kumar viresh.ku...@linaro.org wrote: Yes, we don't need to call prepare() again atleast for SPEAr. You are correct. I saw the driver after a long time :) I'm asking because it's actually OK to do this, I was more asking whether it was really needed by any platforms... Can you please elaborate, why can't i see any clk_disable/enable calls anywhere else from probe. If i remember correctly, earlier we used to enable/disable clk after transfers and also during suspend/resume. We clk_disable() at runtime_suspend() and clk_enable() at runtime resume, and the driver gives hints to the runtime PM layer to autosuspend the driver whenever it's unused. Check the pm_runtime_* calls. The amba layer is taking care of interface clock only and not functional clock. So i believe that's not the magic code. :) This clock is the one for the external bus. In some designs these two clocks are one and the same, and these won't currently get into any clock disabled states, sadly. (We need to fix that some day.) Yours, Linus Walleij -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
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[REPOST PATCH v2 1/2] spi: omap2-mcspi: add pinctrl support
Adds pinctrl support to support OMAP platforms that boot from DT
and rely on pinctrl support to set pinmuxes.
Signed-off-by: Matt Porter mpor...@ti.com
---
drivers/spi/spi-omap2-mcspi.c |8
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index b2fb141..9502566 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -38,6 +38,8 @@
#include linux/pm_runtime.h
#include linux/of.h
#include linux/of_device.h
+#include linux/pinctrl/consumer.h
+#include linux/err.h
#include linux/spi/spi.h
@@ -1124,6 +1126,7 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
static int bus_num = 1;
struct device_node *node = pdev-dev.of_node;
const struct of_device_id *match;
+ struct pinctrl *pinctrl;
master = spi_alloc_master(pdev-dev, sizeof *mcspi);
if (master == NULL) {
@@ -1219,6 +1222,11 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
if (status 0)
goto dma_chnl_free;
+ pinctrl = devm_pinctrl_get_select_default(pdev-dev);
+ if (IS_ERR(pinctrl))
+ dev_warn(pdev-dev,
+ pins are not configured from the driver\n);
+
pm_runtime_use_autosuspend(pdev-dev);
pm_runtime_set_autosuspend_delay(pdev-dev, SPI_AUTOSUSPEND_TIMEOUT);
pm_runtime_enable(pdev-dev);
--
1.7.9.5
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Re: [PATCH v2 1/2] spi: omap2-mcspi: add pinctrl support
On Tue, Sep 18, 2012 at 10:57:26AM +0530, Shubhrajyoti wrote:
On Monday 17 September 2012 10:52 PM, Matt Porter wrote:
Adds pinctrl support to support OMAP platforms that boot from DT
and rely on pinctrl support to set pinmuxes.
Signed-off-by: Matt Porter mpor...@ti.com
---
looks good to me.
you may want to repost with Mark in cc to review.
Acked-by: Shubhrajyoti D shubhrajy...@ti.com
Thanks...reposted this part with Mark cced.
-Matt
drivers/spi/spi-omap2-mcspi.c |8
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index b2fb141..9502566 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -38,6 +38,8 @@
#include linux/pm_runtime.h
#include linux/of.h
#include linux/of_device.h
+#include linux/pinctrl/consumer.h
+#include linux/err.h
#include linux/spi/spi.h
@@ -1124,6 +1126,7 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
static int bus_num = 1;
struct device_node *node = pdev-dev.of_node;
const struct of_device_id *match;
+ struct pinctrl *pinctrl;
master = spi_alloc_master(pdev-dev, sizeof *mcspi);
if (master == NULL) {
@@ -1219,6 +1222,11 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
if (status 0)
goto dma_chnl_free;
+ pinctrl = devm_pinctrl_get_select_default(pdev-dev);
+ if (IS_ERR(pinctrl))
+ dev_warn(pdev-dev,
+ pins are not configured from the driver\n);
+
pm_runtime_use_autosuspend(pdev-dev);
pm_runtime_set_autosuspend_delay(pdev-dev, SPI_AUTOSUSPEND_TIMEOUT);
pm_runtime_enable(pdev-dev);
--
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Re: [PATCH 09/19] ARM: ux500: Enable SSP (SPI) for HREF when booting Device Tree
On Mon, Sep 17, 2012 at 7:03 PM, Roland Stigge sti...@antcom.de wrote: On 09/10/2012 01:11 PM, Linus Walleij wrote: It appears Roland has written his bindings such that DT data augments platform data (yes, I am also getting crazy about this prioritization, mea culpa for ACKing this without proper discussion) so it appears that you could actually use AUXDATA and some stuff in the DT at the same time. Sorry for the incompleteness of the devicetree conversion. I'm sending a patch (separately) that makes it possible to specify everything via devicetree, so you can choose between dt and platform data. OK it was not such a big deal, but many many thanks for fixing this up! :-) Except in case of callback specification (dma_filter()), you need to provide platform data. OK. Interestingly, when I removed the actual platform data from the board file, I noticed that I still needed to specify a device name (like dev:ssp0) to make it work. But this seems to be expected according to the documentation of OF_DEV_AUXDATA(). Are there any plans or ideas how to fix this? This is very likely because the clock tree has a name like dev:ssp0 encoded for this device, and if you don't nail it down like that the device name will be the same as the node in your device tree and then clock lookup will fail. The real fix is to convert the clock drivers to use device tree so the drivers can just refer to the phandles to figure out what clock node they need. Along with the DMA channel mapping this is one of the major roadblocks to finalizing the device tree adoptions. When we have sorted out this driver change (please check the new pl022 specific dt property names!), I will provide patches for arm-soc to actually use this new interface via dts files. OK cool I guess you will do this for the LPC32xx? Or are you testing this on some other platforms? Yours, Linus Walleij -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [REPOST PATCH v2 1/2] spi: omap2-mcspi: add pinctrl support
On Tuesday 18 September 2012 05:31 PM, Matt Porter wrote:
Adds pinctrl support to support OMAP platforms that boot from DT
and rely on pinctrl support to set pinmuxes.
looks good
Acked-by: Shubhrajyoti D shubhrajy...@ti.com
Signed-off-by: Matt Porter mpor...@ti.com
---
drivers/spi/spi-omap2-mcspi.c |8
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index b2fb141..9502566 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -38,6 +38,8 @@
#include linux/pm_runtime.h
#include linux/of.h
#include linux/of_device.h
+#include linux/pinctrl/consumer.h
+#include linux/err.h
#include linux/spi/spi.h
@@ -1124,6 +1126,7 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
static int bus_num = 1;
struct device_node *node = pdev-dev.of_node;
const struct of_device_id *match;
+ struct pinctrl *pinctrl;
master = spi_alloc_master(pdev-dev, sizeof *mcspi);
if (master == NULL) {
@@ -1219,6 +1222,11 @@ static int __devinit omap2_mcspi_probe(struct
platform_device *pdev)
if (status 0)
goto dma_chnl_free;
+ pinctrl = devm_pinctrl_get_select_default(pdev-dev);
+ if (IS_ERR(pinctrl))
+ dev_warn(pdev-dev,
+ pins are not configured from the driver\n);
+
pm_runtime_use_autosuspend(pdev-dev);
pm_runtime_set_autosuspend_delay(pdev-dev, SPI_AUTOSUSPEND_TIMEOUT);
pm_runtime_enable(pdev-dev);
--
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Re: [PATCH v2 2/2] ARM: OMAP2+: Enable pinctrl dummy states
On Mon, Sep 17, 2012 at 7:22 PM, Matt Porter mpor...@ti.com wrote: Enable pinctrl dummy states for all OMAP platforms that don't populate DT. This allows drivers to be converted to pinctrl and not generate new warnings on platforms that do not provide pinctrl data. These platforms already have pinmuxes configured before the drivers probe. Signed-off-by: Matt Porter mpor...@ti.com Looks like a good idea, so FWIW: Acked-by: Linus Walleij linus.wall...@linaro.org Yours, Linus Walleij -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
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Re: [PATCH 09/19] ARM: ux500: Enable SSP (SPI) for HREF when booting Device Tree
Hi, On 09/18/2012 02:08 PM, Linus Walleij wrote: When we have sorted out this driver change (please check the new pl022 specific dt property names!), I will provide patches for arm-soc to actually use this new interface via dts files. OK cool I guess you will do this for the LPC32xx? Or are you testing this on some other platforms? LPC32xx for now. The new code is backwards compatible, so I'd prefer for others to adopt and test it on their platforms individually before patching everything at once without testing. Roland -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
Re: [REPOST PATCH v2 1/2] spi: omap2-mcspi: add pinctrl support
* Shubhrajyoti shubhrajy...@ti.com [120918 05:09]: On Tuesday 18 September 2012 05:31 PM, Matt Porter wrote: Adds pinctrl support to support OMAP platforms that boot from DT and rely on pinctrl support to set pinmuxes. looks good Acked-by: Shubhrajyoti D shubhrajy...@ti.com Acked-by: Tony Lindgren t...@atomide.com -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
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