From: Peng Fan <peng.fan@oss.nxp.com>
To: Sean Anderson <sean.anderson@seco.com>,
Priyanka Jain <priyanka.jain@nxp.com>,
u-boot@lists.denx.de
Cc: Leo Li <leoyang.li@nxp.com>,
Rajesh Bhagat <rajesh.bhagat@nxp.com>,
Mingkai Hu <mingkai.hu@nxp.com>, Ran Wang <ran.wang_1@nxp.com>,
Pramod Kumar <pramod.kumar_1@nxp.com>
Subject: Re: [PATCH] arm64: ls104x: Enable eDMA snooping
Date: Mon, 26 Sep 2022 15:56:13 +0800 [thread overview]
Message-ID: <9623ee6a-1757-ff9d-f861-81062b5315d0@oss.nxp.com> (raw)
In-Reply-To: <20220923160551.2200873-1-sean.anderson@seco.com>
On 9/24/2022 12:05 AM, Sean Anderson wrote:
> This enables eDMA snooping on the LS1043A and LS1046A. This will allow
> marking the I2C, LPUART, and SPI devices on these SoCs as DMA coherent.
> Oddly, this bit is only documented for the LS1043A, and is marked as
> "reserved" in the LS1046ARM. I have tested this patch on the LS1046A
> and found that marking i2c0 as dma-coherent works without issue.
>
> Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Thanks,
Peng.
> ---
>
> arch/arm/cpu/armv8/fsl-layerscape/soc.c | 2 +-
> arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h | 1 +
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> index 926f8f21b63..515dbe02fd7 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> @@ -682,7 +682,7 @@ void fsl_lsch2_early_init_f(void)
> SCFG_SNPCNFGCR_USB1WRSNP | SCFG_SNPCNFGCR_USB2RDSNP |
> SCFG_SNPCNFGCR_USB2WRSNP | SCFG_SNPCNFGCR_USB3RDSNP |
> SCFG_SNPCNFGCR_USB3WRSNP | SCFG_SNPCNFGCR_SATARDSNP |
> - SCFG_SNPCNFGCR_SATAWRSNP);
> + SCFG_SNPCNFGCR_SATAWRSNP | SCFG_SNPCNFGCR_EDMASNP);
> #elif defined(CONFIG_ARCH_LS1012A)
> setbits_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SECRDSNP |
> SCFG_SNPCNFGCR_SECWRSNP | SCFG_SNPCNFGCR_USB1RDSNP |
> diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
> index 06adf669390..e86cfba8669 100644
> --- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
> +++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
> @@ -413,6 +413,7 @@ struct ccsr_gur {
> #define SCFG_SNPCNFGCR_SATAWRSNP 0x00400000
> #define SCFG_SNPCNFGCR_USB1RDSNP 0x00200000
> #define SCFG_SNPCNFGCR_USB1WRSNP 0x00100000
> +#define SCFG_SNPCNFGCR_EDMASNP 0x00020000
> #define SCFG_SNPCNFGCR_USB2RDSNP 0x00008000
> #define SCFG_SNPCNFGCR_USB2WRSNP 0x00010000
> #define SCFG_SNPCNFGCR_USB3RDSNP 0x00002000
next prev parent reply other threads:[~2022-09-26 7:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-23 16:05 [PATCH] arm64: ls104x: Enable eDMA snooping Sean Anderson
2022-09-26 7:56 ` Peng Fan [this message]
2022-10-09 2:37 ` Peng Fan
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