diff mbox

[U-Boot,RESEND] ARM: dts: dra7x: Support QSPI MODE-0 operation at 64MHz

Message ID 20160706045603.22185-1-vigneshr@ti.com
State Accepted
Delegated to: Jagannadha Sutradharudu Teki
Headers show

Commit Message

Raghavendra, Vignesh July 6, 2016, 4:56 a.m. UTC 
According to Data Manual(SPRS915P) of AM57x, TI QSPI controller on
DRA74(rev 1.1+)/DRA72 EVM can support up to 64MHz in MODE-0, whereas
MODE-3 is limited to 48MHz. Hence, switch to MODE-0 for better
throughput.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 arch/arm/dts/dra7-evm.dts  | 6 ++----
 arch/arm/dts/dra72-evm.dts | 6 ++----
 2 files changed, 4 insertions(+), 8 deletions(-)

Comments

Mugunthan V N July 6, 2016, 5:57 a.m. UTC | #1 
On Wednesday 06 July 2016 10:26 AM, Vignesh R wrote:
> According to Data Manual(SPRS915P) of AM57x, TI QSPI controller on
> DRA74(rev 1.1+)/DRA72 EVM can support up to 64MHz in MODE-0, whereas
> MODE-3 is limited to 48MHz. Hence, switch to MODE-0 for better
> throughput.
> 
> Signed-off-by: Vignesh R <vigneshr@ti.com>
> Reviewed-by: Tom Rini <trini@konsulko.com>

Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>

Regards
Mugunthan V N
Jagan Teki July 6, 2016, 7:37 a.m. UTC | #2 
On 6 July 2016 at 11:27, Mugunthan V N <mugunthanvnm@ti.com> wrote:
> On Wednesday 06 July 2016 10:26 AM, Vignesh R wrote:
>> According to Data Manual(SPRS915P) of AM57x, TI QSPI controller on
>> DRA74(rev 1.1+)/DRA72 EVM can support up to 64MHz in MODE-0, whereas
>> MODE-3 is limited to 48MHz. Hence, switch to MODE-0 for better
>> throughput.
>>
>> Signed-off-by: Vignesh R <vigneshr@ti.com>
>> Reviewed-by: Tom Rini <trini@konsulko.com>
>
> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>

Reviewed-by: Jagan Teki <jteki@openedev.com>

Applied to u-boot-spi/master
diff mbox

Patch

diff --git a/arch/arm/dts/dra7-evm.dts b/arch/arm/dts/dra7-evm.dts
index 08ef04e177b0..429b9edc1b2b 100644
--- a/arch/arm/dts/dra7-evm.dts
+++ b/arch/arm/dts/dra7-evm.dts
@@ -491,15 +491,13 @@ 
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi1_pins>;
 
-	spi-max-frequency = <48000000>;
+	spi-max-frequency = <64000000>;
 	m25p80@0 {
 		compatible = "s25fl256s1","spi-flash";
-		spi-max-frequency = <48000000>;
+		spi-max-frequency = <64000000>;
 		reg = <0>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <4>;
-		spi-cpol;
-		spi-cpha;
 		#address-cells = <1>;
 		#size-cells = <1>;
 
diff --git a/arch/arm/dts/dra72-evm.dts b/arch/arm/dts/dra72-evm.dts
index 205103e2b0e1..ced2f1166d8c 100644
--- a/arch/arm/dts/dra72-evm.dts
+++ b/arch/arm/dts/dra72-evm.dts
@@ -603,15 +603,13 @@ 
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi1_pins>;
 
-	spi-max-frequency = <48000000>;
+	spi-max-frequency = <64000000>;
 	m25p80@0 {
 		compatible = "s25fl256s1","spi-flash";
-		spi-max-frequency = <48000000>;
+		spi-max-frequency = <64000000>;
 		reg = <0>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <4>;
-		spi-cpol;
-		spi-cpha;
 		#address-cells = <1>;
 		#size-cells = <1>;