From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 07/11] pxa: start.S: enable SRAM clock
Date: Mon, 21 Mar 2016 02:50:36 +0100 [thread overview]
Message-ID: <56EF536C.3010606@denx.de> (raw)
In-Reply-To: <1458524230-10827-7-git-send-email-anarsoul@gmail.com>
On 03/21/2016 02:37 AM, Vasily Khoruzhick wrote:
> SRAM is used for early stack, but kernel disables its clock on suspend.
> Re-enable SRAM clock on startup, otherwise u-boot crashes on resume from suspend.
>
> Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
> ---
> arch/arm/cpu/pxa/start.S | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
> index 24b6ad1..ce1181a 100644
> --- a/arch/arm/cpu/pxa/start.S
> +++ b/arch/arm/cpu/pxa/start.S
> @@ -53,7 +53,15 @@ reset:
> #ifdef CONFIG_CPU_PXA25X
> bl lock_cache_for_stack
> #endif
> -
> +#ifdef CONFIG_CPU_PXA27X
> + /*
> + * enable clock for SRAM
> + */
> + ldr r0,=CKEN
> + ldr r1,[r0]
> + orr r1,r1,#(1 << 20)
Don't we have a macro for this 1 << 20 already ?
> + str r1,[r0]
> +#endif
> bl _main
>
> /*------------------------------------------------------------------------------*/
>
--
Best regards,
Marek Vasut
next prev parent reply other threads:[~2016-03-21 1:50 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 1:37 [U-Boot] [PATCH 01/11] zipitz2: restore board support Vasily Khoruzhick
2016-03-21 1:37 ` [U-Boot] [PATCH 02/11] zipitz2: enable LCD rotation Vasily Khoruzhick
2016-03-21 1:47 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,02/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 03/11] pxa_lcd: invert colors for Zipit Z2 to get white on black palette Vasily Khoruzhick
2016-03-21 1:48 ` Marek Vasut
2016-03-21 2:10 ` Vasily Khoruzhick
2016-03-21 2:14 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot, " Tom Rini
2016-03-27 23:26 ` Marek Vasut
2016-03-28 0:58 ` Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 04/11] zipitz2: enable libfdt Vasily Khoruzhick
2016-03-21 1:48 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,04/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 05/11] pxa-common: pxa27x has 3 OHCI ports Vasily Khoruzhick
2016-03-21 1:49 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,05/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 06/11] zipitz2: enable USB host support Vasily Khoruzhick
2016-03-21 1:49 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,06/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 07/11] pxa: start.S: enable SRAM clock Vasily Khoruzhick
2016-03-21 1:50 ` Marek Vasut [this message]
2016-03-27 22:29 ` [U-Boot] [U-Boot,07/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 08/11] pxa: add support for D- and I- caches Vasily Khoruzhick
2016-03-21 1:51 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,08/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 09/11] pxa_lcd: make driver cache-aware Vasily Khoruzhick
2016-03-21 1:52 ` Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,09/11] " Tom Rini
2016-03-27 23:27 ` Marek Vasut
2016-03-28 0:58 ` Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 10/11] zipitz2: enable caches Vasily Khoruzhick
2016-03-21 1:52 ` Marek Vasut
2016-03-27 22:30 ` [U-Boot] [U-Boot,10/11] " Tom Rini
2016-03-21 1:37 ` [U-Boot] [PATCH 11/11] cfi_flash: return device into read array mode after reading status Vasily Khoruzhick
2016-03-21 1:54 ` Marek Vasut
2016-03-21 16:19 ` Stefan Roese
2016-03-21 19:22 ` Vasily Khoruzhick
2016-03-22 6:40 ` Stefan Roese
2016-03-27 22:30 ` [U-Boot] [U-Boot, " Tom Rini
2016-03-21 1:45 ` [U-Boot] [PATCH 01/11] zipitz2: restore board support Marek Vasut
2016-03-27 22:29 ` [U-Boot] [U-Boot,01/11] " Tom Rini
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