Re: [U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Mugunthan V N]

On Monday 25 July 2016 03:45 PM, Vignesh R wrote:
> According to AM572x DM SPRS953A, QSPI max bus speed is 76.8MHz.
> Therefore update the spi-max-frequency value of QSPI node for DRA74 and
> DRA72 evm. This increase flash read speed by ~2MB/s.
> 
> Signed-off-by: Vignesh R 
> ---

Reviewed-by: Mugunthan V N 

Regards
Mugunthan V N

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Re: [U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Jagan Teki]

On 25 July 2016 at 19:16, Vignesh R  wrote:
>
>
> On Monday 25 July 2016 07:08 PM, Tom Rini wrote:
>> On Mon, Jul 25, 2016 at 03:45:47PM +0530, Vignesh R wrote:
>>
>>> According to AM572x DM SPRS953A, QSPI max bus speed is 76.8MHz.
>>> Therefore update the spi-max-frequency value of QSPI node for DRA74 and
>>> DRA72 evm. This increase flash read speed by ~2MB/s.
>>>
>>> Signed-off-by: Vignesh R 
>>
>> Reviewed-by: Tom Rini 
>>
>> And similar changes are taking place in Linux-land and the DTS will be
>> updated there too, right?  Thanks!
>
> Yes, I will be updating Kernel DTS too...

Reviewed-by: Jagan Teki 

-- 
Jagan.
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Re: [U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Tom Rini]

On Mon, Jul 25, 2016 at 03:45:47PM +0530, Vignesh R wrote:

> According to AM572x DM SPRS953A, QSPI max bus speed is 76.8MHz.
> Therefore update the spi-max-frequency value of QSPI node for DRA74 and
> DRA72 evm. This increase flash read speed by ~2MB/s.
> 
> Signed-off-by: Vignesh R 

Reviewed-by: Tom Rini 

And similar changes are taking place in Linux-land and the DTS will be
updated there too, right?  Thanks!

-- 
Tom


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Re: [U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Vignesh R]

On Monday 25 July 2016 07:08 PM, Tom Rini wrote:
> On Mon, Jul 25, 2016 at 03:45:47PM +0530, Vignesh R wrote:
> 
>> According to AM572x DM SPRS953A, QSPI max bus speed is 76.8MHz.
>> Therefore update the spi-max-frequency value of QSPI node for DRA74 and
>> DRA72 evm. This increase flash read speed by ~2MB/s.
>>
>> Signed-off-by: Vignesh R 
> 
> Reviewed-by: Tom Rini 
> 
> And similar changes are taking place in Linux-land and the DTS will be
> updated there too, right?  Thanks!

Yes, I will be updating Kernel DTS too...


-- 
Regards
Vignesh
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[U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Vignesh R]

According to AM572x DM SPRS953A, QSPI max bus speed is 76.8MHz.
Therefore update the spi-max-frequency value of QSPI node for DRA74 and
DRA72 evm. This increase flash read speed by ~2MB/s.

Signed-off-by: Vignesh R 
---
 arch/arm/dts/dra7-evm.dts  | 2 +-
 arch/arm/dts/dra72-evm.dts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/dts/dra7-evm.dts b/arch/arm/dts/dra7-evm.dts
index 429b9edc1b2b..8b77a761d211 100644
--- a/arch/arm/dts/dra7-evm.dts
+++ b/arch/arm/dts/dra7-evm.dts
@@ -491,7 +491,7 @@
pinctrl-names = "default";
pinctrl-0 = <_pins>;
 
-   spi-max-frequency = <6400>;
+   spi-max-frequency = <7680>;
m25p80@0 {
compatible = "s25fl256s1","spi-flash";
spi-max-frequency = <6400>;
diff --git a/arch/arm/dts/dra72-evm.dts b/arch/arm/dts/dra72-evm.dts
index ced2f1166d8c..c7c5d40adac7 100644
--- a/arch/arm/dts/dra72-evm.dts
+++ b/arch/arm/dts/dra72-evm.dts
@@ -603,7 +603,7 @@
pinctrl-names = "default";
pinctrl-0 = <_pins>;
 
-   spi-max-frequency = <6400>;
+   spi-max-frequency = <7680>;
m25p80@0 {
compatible = "s25fl256s1","spi-flash";
spi-max-frequency = <6400>;
-- 
2.9.2

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