diff mbox series

[v2,1/4] clk: actions: Terminate clk_div_table with sentinel element

Message ID 20220203142153.260720-2-j.neuschaefer@gmx.net (mailing list archive)
State Superseded
Headers show
Series clk drivers: Terminate clk_div_table with sentinel element | expand

Commit Message

J. Neuschäfer Feb. 3, 2022, 2:21 p.m. UTC
In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).

Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---

I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
meant to be { 0, 0 }? I'd appreciate if someone with access to the
datasheet or hardware could verify what's correct.

v2:
- Add Fixes tags
---
 drivers/clk/actions/owl-s700.c | 1 +
 drivers/clk/actions/owl-s900.c | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

--
2.34.1

Comments

Manivannan Sadhasivam Feb. 3, 2022, 4:12 p.m. UTC | #1
On Thu, Feb 03, 2022 at 03:21:50PM +0100, Jonathan Neuschäfer wrote:
> In order that the end of a clk_div_table can be detected, it must be
> terminated with a sentinel element (.div = 0).
> 
> Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
> Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> ---
> 
> I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
> meant to be { 0, 0 }? I'd appreciate if someone with access to the
> datasheet or hardware could verify what's correct.

USB3 factor table is not documented in the datasheet I have access to. But by
looking at the value, it looks to be a typo. So please change the last entry.
With that,

Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>

Thanks,
Mani

> 
> v2:
> - Add Fixes tags
> ---
>  drivers/clk/actions/owl-s700.c | 1 +
>  drivers/clk/actions/owl-s900.c | 4 ++--
>  2 files changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/actions/owl-s700.c b/drivers/clk/actions/owl-s700.c
> index a2f34d13fb543..617174644f728 100644
> --- a/drivers/clk/actions/owl-s700.c
> +++ b/drivers/clk/actions/owl-s700.c
> @@ -162,6 +162,7 @@ static struct clk_div_table hdmia_div_table[] = {
> 
>  static struct clk_div_table rmii_div_table[] = {
>  	{0, 4},   {1, 10},
> +	{0, 0},
>  };
> 
>  /* divider clocks */
> diff --git a/drivers/clk/actions/owl-s900.c b/drivers/clk/actions/owl-s900.c
> index 790890978424a..f6f49100a865b 100644
> --- a/drivers/clk/actions/owl-s900.c
> +++ b/drivers/clk/actions/owl-s900.c
> @@ -139,8 +139,8 @@ static struct clk_div_table rmii_ref_div_table[] = {
>  };
> 
>  static struct clk_div_table usb3_mac_div_table[] = {
> -	{ 1, 2 }, { 2, 3 }, { 3, 4 },
> -	{ 0, 8 },
> +	{ 1, 2 }, { 2, 3 }, { 3, 4 }, { 0, 8 },
> +	{ 0, 0 },
>  };
> 
>  static struct clk_div_table i2s_div_table[] = {
> --
> 2.34.1
>
J. Neuschäfer Feb. 4, 2022, 11:57 p.m. UTC | #2
On Thu, Feb 03, 2022 at 09:42:10PM +0530, Manivannan Sadhasivam wrote:
> On Thu, Feb 03, 2022 at 03:21:50PM +0100, Jonathan Neuschäfer wrote:
> > In order that the end of a clk_div_table can be detected, it must be
> > terminated with a sentinel element (.div = 0).
> > 
> > Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
> > Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
> > Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> > ---
> > 
> > I'm not so sure about usb3_mac_div_table. Maybe the { 0, 8 } element was
> > meant to be { 0, 0 }? I'd appreciate if someone with access to the
> > datasheet or hardware could verify what's correct.
> 
> USB3 factor table is not documented in the datasheet I have access to. But by
> looking at the value, it looks to be a typo. So please change the last entry.

Okay.

> With that,
> 
> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>

Thanks!

Jonathan
diff mbox series

Patch

diff --git a/drivers/clk/actions/owl-s700.c b/drivers/clk/actions/owl-s700.c
index a2f34d13fb543..617174644f728 100644
--- a/drivers/clk/actions/owl-s700.c
+++ b/drivers/clk/actions/owl-s700.c
@@ -162,6 +162,7 @@  static struct clk_div_table hdmia_div_table[] = {

 static struct clk_div_table rmii_div_table[] = {
 	{0, 4},   {1, 10},
+	{0, 0},
 };

 /* divider clocks */
diff --git a/drivers/clk/actions/owl-s900.c b/drivers/clk/actions/owl-s900.c
index 790890978424a..f6f49100a865b 100644
--- a/drivers/clk/actions/owl-s900.c
+++ b/drivers/clk/actions/owl-s900.c
@@ -139,8 +139,8 @@  static struct clk_div_table rmii_ref_div_table[] = {
 };

 static struct clk_div_table usb3_mac_div_table[] = {
-	{ 1, 2 }, { 2, 3 }, { 3, 4 },
-	{ 0, 8 },
+	{ 1, 2 }, { 2, 3 }, { 3, 4 }, { 0, 8 },
+	{ 0, 0 },
 };

 static struct clk_div_table i2s_div_table[] = {