Patchwork [U-Boot] eb_cpux9k2: fix chip select

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Submitter Jens Scharsig
Date April 29, 2012, 2:15 p.m.
Message ID <1335708915-20338-1-git-send-email-js_at_ng@scharsoft.de>
Download mbox | patch
Permalink /patch/155739/
State Accepted
Delegated to: Andreas Bießmann
Headers show

Comments

Jens Scharsig - April 29, 2012, 2:15 p.m.
* fix chip select initialization for frame buffer, this will be
  increase frame buffer access speed

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
---
 board/BuS/eb_cpux9k2/cpux9k2.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
esw@bus-elektronik.de - Sept. 3, 2012, 10:50 a.m.
Dear Andreas Bießmann,

Please could you apply this open patch.
I've just tested this against the current atmel and master tree.
It works.

best regards

Jens Scharsig

> * fix chip select initialization for frame buffer, this will be
>   increase frame buffer access speed
> 
> Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
> ---
>  board/BuS/eb_cpux9k2/cpux9k2.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/board/BuS/eb_cpux9k2/cpux9k2.c b/board/BuS/eb_cpux9k2/cpux9k2.c
> index 54f9b64..15a31be 100644
> --- a/board/BuS/eb_cpux9k2/cpux9k2.c
> +++ b/board/BuS/eb_cpux9k2/cpux9k2.c
> @@ -269,9 +269,9 @@ int drv_video_init(void)
>  		display_height = 256;
>  	printf("%ld x %ld pixel matrix\n", display_width, display_height);
>  
> -	/* RWH = 7 | RWS =7  | TDF = 15 | NWS = 0x7F */
> -	csr =	AT91_SMC_CSR_RWHOLD(7) | AT91_SMC_CSR_RWSETUP(7) |
> -		AT91_SMC_CSR_TDF(15) | AT91_SMC_CSR_NWS(127) |
> +	/* RWH = 2 | RWS =2  | TDF = 4 | NWS = 0x6 */
> +	csr =	AT91_SMC_CSR_RWHOLD(2) | AT91_SMC_CSR_RWSETUP(2) |
> +		AT91_SMC_CSR_TDF(4) | AT91_SMC_CSR_NWS(6) |
>  		AT91_SMC_CSR_ACSS_STANDARD | AT91_SMC_CSR_DBW_16 |
>  		AT91_SMC_CSR_BAT_16 | AT91_SMC_CSR_WSEN;
>  	writel(csr, &mc->smc.csr[2]);
>
Andreas Bießmann - Sept. 3, 2012, 8:38 p.m.
Dear Jens Scharsig,

On 29.04.12 16:15, Jens Scharsig wrote:
> * fix chip select initialization for frame buffer, this will be
>   increase frame buffer access speed
> 
> Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
> ---

applied to u-boot-atmel/master, thanks!

Best regards

Andreas Bießmann

Patch

diff --git a/board/BuS/eb_cpux9k2/cpux9k2.c b/board/BuS/eb_cpux9k2/cpux9k2.c
index 54f9b64..15a31be 100644
--- a/board/BuS/eb_cpux9k2/cpux9k2.c
+++ b/board/BuS/eb_cpux9k2/cpux9k2.c
@@ -269,9 +269,9 @@  int drv_video_init(void)
 		display_height = 256;
 	printf("%ld x %ld pixel matrix\n", display_width, display_height);
 
-	/* RWH = 7 | RWS =7  | TDF = 15 | NWS = 0x7F */
-	csr =	AT91_SMC_CSR_RWHOLD(7) | AT91_SMC_CSR_RWSETUP(7) |
-		AT91_SMC_CSR_TDF(15) | AT91_SMC_CSR_NWS(127) |
+	/* RWH = 2 | RWS =2  | TDF = 4 | NWS = 0x6 */
+	csr =	AT91_SMC_CSR_RWHOLD(2) | AT91_SMC_CSR_RWSETUP(2) |
+		AT91_SMC_CSR_TDF(4) | AT91_SMC_CSR_NWS(6) |
 		AT91_SMC_CSR_ACSS_STANDARD | AT91_SMC_CSR_DBW_16 |
 		AT91_SMC_CSR_BAT_16 | AT91_SMC_CSR_WSEN;
 	writel(csr, &mc->smc.csr[2]);