From: Denzeel Oliva <wachiturroxd150@gmail.com>
To: Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: alim.akhtar@samsung.com, andi.shyti@kernel.org,
andre.draszik@linaro.org, broonie@kernel.org,
conor+dt@kernel.org, devicetree@vger.kernel.org,
krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-spi@vger.kernel.org, peter.griffin@linaro.org,
robh@kernel.org, wachiturroxd150@gmail.com
Subject: Re: [PATCH v1 0/2] spi: s3c64xx: add support for samsung,exynos990-spi
Date: Thu, 13 Feb 2025 19:47:45 +0000 [thread overview]
Message-ID: <Z65MYSNuDdCFNlv6@droid-r8s> (raw)
In-Reply-To: <bad7b5b6-c61b-4e93-9415-6476976c8e81@linaro.org>
On Thu, Feb 13, 2025 at 07:05:22AM +0000, Tudor Ambarus wrote:
> gs101 mandates 32-bit accesses too.
Also in exynos990 [0]
> > the SPI node where it will have to be specified in DT (Device Tree).
>
> gs101 has some USI nodes that can work only in uart mode and indeed the
> fifosize there is 256. Does downstream define SPI nodes with 256 bytes
> FIFOs? Can you please point me the the downstream code?
>
Yes, Exynos990 has SPI nodes with 256-byte FIFOs, and you can see this in
the downstream kernel. Here are some relevant references:
- SPI8: [1]
- SPI9: [2]
- SPI10: [3]
Best regards,
Denzeel
[0] https://github.com/pascua28/android_kernel_samsung_s20fe/blob/3be539e9cd22b89ba3cc8282945a0c46ff27341d/drivers/spi/spi-s3c64xx.c#L767
[1] https://github.com/pascua28/android_kernel_samsung_s20fe/blob/3be539e9cd22b89ba3cc8282945a0c46ff27341d/arch/arm64/boot/dts/exynos/exynos9830-usi.dtsi#L1641
[2] https://github.com/pascua28/android_kernel_samsung_s20fe/blob/3be539e9cd22b89ba3cc8282945a0c46ff27341d/arch/arm64/boot/dts/exynos/exynos9830-usi.dtsi#L1662
[3] https://github.com/pascua28/android_kernel_samsung_s20fe/blob/3be539e9cd22b89ba3cc8282945a0c46ff27341d/arch/arm64/boot/dts/exynos/exynos9830-usi.dtsi#L1683
next prev parent reply other threads:[~2025-02-13 19:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-12 19:12 [PATCH v1 0/2] spi: s3c64xx: add support for samsung,exynos990-spi Denzeel Oliva
2025-02-12 19:12 ` [PATCH v1 1/2] spi: dt-bindings: samsung: add samsung,exynos990-spi compatible Denzeel Oliva
2025-02-12 19:12 ` [PATCH v1 2/2] spi: s3c64xx: add support exynos990-spi to new port config data Denzeel Oliva
2025-02-13 7:10 ` Tudor Ambarus
2025-02-13 7:05 ` [PATCH v1 0/2] spi: s3c64xx: add support for samsung,exynos990-spi Tudor Ambarus
2025-02-13 19:47 ` Denzeel Oliva [this message]
2025-02-14 6:14 ` Tudor Ambarus
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Z65MYSNuDdCFNlv6@droid-r8s \
--to=wachiturroxd150@gmail.com \
--cc=alim.akhtar@samsung.com \
--cc=andi.shyti@kernel.org \
--cc=andre.draszik@linaro.org \
--cc=broonie@kernel.org \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=peter.griffin@linaro.org \
--cc=robh@kernel.org \
--cc=tudor.ambarus@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.