From: Mark Brown <broonie@kernel.org>
To: William Zhang <william.zhang@broadcom.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Linux SPI List <linux-spi@vger.kernel.org>,
Broadcom Kernel List <bcm-kernel-feedback-list@broadcom.com>,
anand.gore@broadcom.com, tomer.yacoby@broadcom.com,
dan.beygelman@broadcom.com, joel.peshkin@broadcom.com,
f.fainelli@gmail.com, jonas.gorski@gmail.com,
kursad.oney@broadcom.com, dregan@mail.com,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/16] dt-bindings: spi: Add spi peripheral specific property
Date: Mon, 9 Jan 2023 19:19:14 +0000 [thread overview]
Message-ID: <Y7xosoZMJEwRi1ok@sirena.org.uk> (raw)
In-Reply-To: <6720e3a4-dbbb-f490-98db-511a52b9a2ab@broadcom.com>
[-- Attachment #1: Type: text/plain, Size: 749 bytes --]
On Mon, Jan 09, 2023 at 12:06:13AM -0800, William Zhang wrote:
> > On Fri, Jan 6, 2023 at 9:27 PM William Zhang <william.zhang@broadcom.com> wrote:
> > Keeping the clock on or not would affect all devices unless you have a
> > per device clock you can gate, so making this a per device flag
> > doesn't make sense.
> This applies only to each chip select. There is only one device under each
> chip select. So won't impact any other devices under other cs.
I don't understand how this would work - usually a SPI controller has a
single set of clock, MOSI and MISO lines with the only per device thing
being the chip select. If the clock line is used by all devices then it
must be kept on for all of them if it's to be kept on for one of them.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
next prev parent reply other threads:[~2023-01-09 19:19 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-06 20:07 [PATCH 00/16] spi: bcm63xx-hsspi: driver and doc updates William Zhang
2023-01-06 20:07 ` [PATCH 01/16] dt-bindings: spi: Convert bcm63xx-hsspi bindings to json-schema William Zhang
2023-01-07 15:18 ` Rob Herring
2023-01-07 15:32 ` Krzysztof Kozlowski
2023-01-09 7:52 ` William Zhang
2023-01-09 8:48 ` Krzysztof Kozlowski
2023-01-06 20:07 ` [PATCH 02/16] dt-bindings: spi: Add bcmbca-hsspi controller support William Zhang
2023-01-08 14:51 ` Krzysztof Kozlowski
2023-01-09 8:27 ` William Zhang
2023-01-09 8:56 ` Krzysztof Kozlowski
2023-01-09 19:13 ` William Zhang
2023-01-10 8:40 ` Krzysztof Kozlowski
2023-01-10 22:18 ` Florian Fainelli
2023-01-11 1:08 ` William Zhang
2023-01-11 9:02 ` Krzysztof Kozlowski
2023-01-11 18:04 ` William Zhang
2023-01-11 18:12 ` Krzysztof Kozlowski
2023-01-11 18:44 ` William Zhang
2023-01-12 8:21 ` Krzysztof Kozlowski
2023-01-12 19:50 ` William Zhang
2023-01-13 7:41 ` Krzysztof Kozlowski
2023-01-14 3:17 ` William Zhang
2023-01-15 14:31 ` Krzysztof Kozlowski
2023-01-11 0:59 ` William Zhang
2023-01-11 9:01 ` Krzysztof Kozlowski
2023-01-06 20:07 ` [PATCH 03/16] dt-bindings: spi: Add spi peripheral specific property William Zhang
2023-01-06 21:14 ` Mark Brown
2023-01-07 3:27 ` William Zhang
2023-01-07 15:38 ` Rob Herring
2023-01-09 8:06 ` William Zhang
2023-01-09 19:19 ` Mark Brown [this message]
2023-01-09 20:18 ` William Zhang
2023-01-10 22:01 ` Mark Brown
2023-01-11 19:48 ` William Zhang
2023-01-08 14:52 ` Krzysztof Kozlowski
2023-01-09 8:27 ` William Zhang
2023-01-06 20:07 ` [PATCH 04/16] ARM: dts: broadcom: bcmbca: Add spi controller node William Zhang
2023-01-06 20:07 ` [PATCH 05/16] arm64: " William Zhang
2023-01-06 20:07 ` [PATCH 06/16] spi: bcm63xx-hsspi: Endianness fix for ARM based SoC William Zhang
2023-01-07 7:44 ` kernel test robot
2023-01-07 21:21 ` kernel test robot
2023-01-07 21:52 ` kernel test robot
2023-01-07 23:23 ` kernel test robot
2023-01-11 6:33 ` kernel test robot
2023-01-06 20:07 ` [PATCH 07/16] spi: bcm63xx-hsspi: Add polling mode support William Zhang
2023-01-06 21:47 ` Mark Brown
2023-01-07 3:35 ` William Zhang
2023-01-09 19:06 ` Mark Brown
2023-01-09 20:10 ` William Zhang
2023-01-10 22:49 ` Mark Brown
2023-01-11 20:13 ` William Zhang
2023-01-11 22:41 ` Mark Brown
2023-01-11 22:57 ` William Zhang
2023-01-06 20:08 ` [PATCH 08/16] spi: bcm63xx-hsspi: Handle cs_change correctly William Zhang
2023-01-06 20:08 ` [PATCH 09/16] spi: bcm63xx-hsspi: Fix multi-bit mode setting William Zhang
2023-01-06 20:08 ` [PATCH 10/16] spi: bcm63xx-hsspi: Make dummy cs workaround as an option William Zhang
2023-01-12 18:08 ` Mark Brown
2023-01-18 23:09 ` William Zhang
2023-01-19 13:09 ` Mark Brown
2023-01-06 20:08 ` [PATCH 11/16] spi: bcm63xx-hsspi: Add prepend feature support William Zhang
2023-01-06 22:00 ` Mark Brown
2023-01-07 3:52 ` William Zhang
2023-01-09 19:31 ` Mark Brown
2023-01-09 20:43 ` William Zhang
2023-01-10 21:18 ` Mark Brown
2023-01-11 19:42 ` William Zhang
2023-01-12 16:57 ` Mark Brown
2023-01-06 20:08 ` [PATCH 12/16] spi: bcm63xx-hsspi: Add clock gate disable option support William Zhang
2023-01-06 20:08 ` [PATCH 13/16] spi: spi-mem: Allow controller supporting mem_ops without exec_op William Zhang
2023-01-06 20:08 ` [PATCH 14/16] spi: bcm63xx-hsspi: prepend: Disable spi mem dual io read op support William Zhang
2023-01-06 22:07 ` Mark Brown
2023-01-07 3:57 ` William Zhang
2023-01-06 20:08 ` [PATCH 15/16] spi: bcmbca-hsspi: Add driver for newer HSSPI controller William Zhang
2023-01-07 22:02 ` kernel test robot
2023-01-08 2:25 ` kernel test robot
2023-01-06 20:08 ` [PATCH 16/16] MAINTAINERS: Add entry for Broadcom Broadband SoC HS SPI drivers William Zhang
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=Y7xosoZMJEwRi1ok@sirena.org.uk \
--to=broonie@kernel.org \
--cc=anand.gore@broadcom.com \
--cc=bcm-kernel-feedback-list@broadcom.com \
--cc=dan.beygelman@broadcom.com \
--cc=devicetree@vger.kernel.org \
--cc=dregan@mail.com \
--cc=f.fainelli@gmail.com \
--cc=joel.peshkin@broadcom.com \
--cc=jonas.gorski@gmail.com \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=kursad.oney@broadcom.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=tomer.yacoby@broadcom.com \
--cc=william.zhang@broadcom.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).