[PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Simon Horman]

Rather than requesting the shyway_clk call clk_get with
the device and a NULL con_id.

This is in keeping with the way that clk_get() is called
on other drivers used by Renesas Gen 1 SoCs. And I believe
it is compatible with supplying clocks via DT, unlike the current code.


This series supplies a fix for the r8a7779, a consumer of the driver,
so that the hspi clocks it supplies have the correct source.

And a fix for the sh-hspi driver to address the problem
described above.

Simon Horman (2):
  ARM: shmobile: r8a7779: Use clks as MSTP007 parent
  spi: sh-hspi: Do not specifically request shyway_clk clock

 arch/arm/mach-shmobile/clock-r8a7778.c | 2 +-
 drivers/spi/spi-sh-hspi.c              | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

-- 
1.8.5.2

[PATCH v2 1/2] ARM: shmobile: r8a7779: Use clks as MSTP007 parent

[Simon Horman]

According to the documentation the parent clock of
MSTP007 should be clks not clkp.

Cc: Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>
Signed-off-by: Simon Horman <horms+renesas-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>

---

v2
* First post, as suggested by Laurent Pinchart
---
 arch/arm/mach-shmobile/clock-r8a7778.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c b/arch/arm/mach-shmobile/clock-r8a7778.c
index 2009a9b..9989b1b 100644
--- a/arch/arm/mach-shmobile/clock-r8a7778.c
+++ b/arch/arm/mach-shmobile/clock-r8a7778.c
@@ -170,7 +170,7 @@ static struct clk mstp_clks[MSTP_NR] = {
 	[MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
 	[MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  9, 0), /* SSI3 */
 	[MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  8, 0), /* SRU */
-	[MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  7, 0), /* HSPI */
+	[MSTP007] = SH_CLK_MSTP32(&s_clk, MSTPCR0,  7, 0), /* HSPI */
 };
 
 static struct clk_lookup lookups[] = {
-- 
1.8.5.2

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[PATCH v2 2/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Simon Horman]

Rather than requesting the shyway_clk call clk_get with
the device and a NULL con_id.

This is in keeping with the way that clk_get() is called
on other drivers used by Renesas Gen 1 SoCs. And I believe
it is compatible with supplying clocks via DT, unlike the current code.

Signed-off-by: Simon Horman <horms+renesas-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>

--

It appears to me that the two uses of this driver are
the r8a7778 and r8a7779 SoCs.

The r8a7779 already clocks setup to allow this driver to continue to work
with this change applied.

The r8a7778 has clocks incorrectly setup to allow this driver to continue
to work with this change applied. This problem is addressed in
"ARM: shmobile: r8a7779: Use clks as MSTP007 parent" which is thus
a pre-requisite of this patch.

v2
* Update changelog
---
 drivers/spi/spi-sh-hspi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 82d2f92..e975892 100644
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -274,9 +274,9 @@ static int hspi_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	clk = clk_get(NULL, "shyway_clk");
+	clk = clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "shyway_clk is required\n");
+		dev_err(&pdev->dev, "couldn't get clock\n");
 		ret = -EINVAL;
 		goto error0;
 	}
-- 
1.8.5.2

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Re: [PATCH v2 1/2] ARM: shmobile: r8a7779: Use clks as MSTP007 parent

[Laurent Pinchart]

Hi Simon,

Thank you for the patch.

On Friday 14 March 2014 16:55:38 Simon Horman wrote:
> According to the documentation the parent clock of
> MSTP007 should be clks not clkp.
> 
> Cc: Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>
> Signed-off-by: Simon Horman <horms+renesas-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>

Acked-by: Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>

> 
> ---
> 
> v2
> * First post, as suggested by Laurent Pinchart
> ---
>  arch/arm/mach-shmobile/clock-r8a7778.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c
> b/arch/arm/mach-shmobile/clock-r8a7778.c index 2009a9b..9989b1b 100644
> --- a/arch/arm/mach-shmobile/clock-r8a7778.c
> +++ b/arch/arm/mach-shmobile/clock-r8a7778.c
> @@ -170,7 +170,7 @@ static struct clk mstp_clks[MSTP_NR] = {
>  	[MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */
>  	[MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  9, 0), /* SSI3 */
>  	[MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  8, 0), /* SRU */
> -	[MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0,  7, 0), /* HSPI */
> +	[MSTP007] = SH_CLK_MSTP32(&s_clk, MSTPCR0,  7, 0), /* HSPI */
>  };
> 
>  static struct clk_lookup lookups[] = {

-- 
Regards,

Laurent Pinchart

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Re: [PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Simon Horman]

On Fri, Mar 14, 2014 at 04:55:37PM +0900, Simon Horman wrote:
> Rather than requesting the shyway_clk call clk_get with
> the device and a NULL con_id.
> 
> This is in keeping with the way that clk_get() is called
> on other drivers used by Renesas Gen 1 SoCs. And I believe
> it is compatible with supplying clocks via DT, unlike the current code.
> 
> 
> This series supplies a fix for the r8a7779, a consumer of the driver,
> so that the hspi clocks it supplies have the correct source.
> 
> And a fix for the sh-hspi driver to address the problem
> described above.
> 
> Simon Horman (2):
>   ARM: shmobile: r8a7779: Use clks as MSTP007 parent
>   spi: sh-hspi: Do not specifically request shyway_clk clock
> 
>  arch/arm/mach-shmobile/clock-r8a7778.c | 2 +-
>  drivers/spi/spi-sh-hspi.c              | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)

Hi Mark,

as the first mach-shmobile patch is a run-time dependency for the
second SPI driver patch could you consider taking both of them?

I have checked and I do not expect any conflicts anywhere beetween
v3.14-rc1 and what I have queued up in the devel branch of my renesas tree.

Re: [PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Simon Horman]

On Tue, Mar 18, 2014 at 09:32:55AM +0900, Simon Horman wrote:
> On Fri, Mar 14, 2014 at 04:55:37PM +0900, Simon Horman wrote:
> > Rather than requesting the shyway_clk call clk_get with
> > the device and a NULL con_id.
> > 
> > This is in keeping with the way that clk_get() is called
> > on other drivers used by Renesas Gen 1 SoCs. And I believe
> > it is compatible with supplying clocks via DT, unlike the current code.
> > 
> > 
> > This series supplies a fix for the r8a7779, a consumer of the driver,
> > so that the hspi clocks it supplies have the correct source.
> > 
> > And a fix for the sh-hspi driver to address the problem
> > described above.
> > 
> > Simon Horman (2):
> >   ARM: shmobile: r8a7779: Use clks as MSTP007 parent
> >   spi: sh-hspi: Do not specifically request shyway_clk clock
> > 
> >  arch/arm/mach-shmobile/clock-r8a7778.c | 2 +-
> >  drivers/spi/spi-sh-hspi.c              | 4 ++--
> >  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> Hi Mark,
> 
> as the first mach-shmobile patch is a run-time dependency for the
> second SPI driver patch could you consider taking both of them?
> 
> I have checked and I do not expect any conflicts anywhere beetween
> v3.14-rc1 and what I have queued up in the devel branch of my renesas tree.

Ping
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Re: [PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Mark Brown]

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On Fri, Apr 11, 2014 at 08:31:20AM +0900, Simon Horman wrote:

> Ping

Don't send contentless pings; unfortunately I don't really know what
this is about as you've sent it to my work address and as a result I
didn't read the earlier parts of the thread - please use the address
in MAINTAINERS (broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org).  This helps route mail and when
there's more than one maintianer it ensures you reach both of them.

Outside of a few patterns where it's expected I mostly just delete
upstream mail for my work account unread since it's typically copied to
both work and kernel.org.

Can you resend whatever the original series was please?

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Re: [PATCH v2 0/2] spi: sh-hspi: Do not specifically request shyway_clk clock

[Simon Horman]

On Fri, Apr 11, 2014 at 12:01:41PM +0100, Mark Brown wrote:
> On Fri, Apr 11, 2014 at 08:31:20AM +0900, Simon Horman wrote:
> 
> > Ping
> 
> Don't send contentless pings; unfortunately I don't really know what
> this is about as you've sent it to my work address and as a result I
> didn't read the earlier parts of the thread - please use the address
> in MAINTAINERS (broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org).  This helps route mail and when
> there's more than one maintianer it ensures you reach both of them.
> 
> Outside of a few patterns where it's expected I mostly just delete
> upstream mail for my work account unread since it's typically copied to
> both work and kernel.org.
> 
> Can you resend whatever the original series was please?

Sure, I will repost it. Sorry for using the wrong address.


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