All of lore.kernel.org
 help / color / mirror / Atom feed
From: <patrice.chotard@foss.st.com>
To: Mark Brown <broonie@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-spi@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <christophe.kerello@foss.st.com>,
	<patrice.chotard@foss.st.com>
Subject: [PATCH v4 0/2] spi: stm32_qspi: use QSPI bus as 8 lines communication channel
Date: Tue, 23 Aug 2022 09:58:48 +0200	[thread overview]
Message-ID: <20220823075850.575043-1-patrice.chotard@foss.st.com> (raw)

From: Patrice Chotard <patrice.chotard@foss.st.com>

The goal of this series is to allow to use QSPI bus as a 8 lines communication 
channel for specific purpose.

The QSPI block offers the possibility to communicate with 2 flashes in 
parrallel using the dual flash mode, 8 data lines are then used.
Usage of cs-gpios populated and spi-tx-bus-width / spi-rx-bus-width both set to 8,
is needed to enable dual flash mode.

The addition of the legacy transfer_one_message() spi callback is also needed
as currently the stm32-qspi driver only supports spi_controller_mem_ops API.


Patrice Chotard (2):
  ARM: dts: stm32: Create separate pinmux for qspi cs pin in
    stm32mp15-pinctrl.dtsi
  spi: stm32_qspi: Add transfer_one_message() spi callback

 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi |  50 ++++++----
 arch/arm/boot/dts/stm32mp157c-ev1.dts    |  12 ++-
 drivers/spi/spi-stm32-qspi.c             | 118 +++++++++++++++++++++--
 3 files changed, 152 insertions(+), 28 deletions(-)

-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: <patrice.chotard@foss.st.com>
To: Mark Brown <broonie@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-spi@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <christophe.kerello@foss.st.com>,
	<patrice.chotard@foss.st.com>
Subject: [PATCH v4 0/2] spi: stm32_qspi: use QSPI bus as 8 lines communication channel
Date: Tue, 23 Aug 2022 09:58:48 +0200	[thread overview]
Message-ID: <20220823075850.575043-1-patrice.chotard@foss.st.com> (raw)

From: Patrice Chotard <patrice.chotard@foss.st.com>

The goal of this series is to allow to use QSPI bus as a 8 lines communication 
channel for specific purpose.

The QSPI block offers the possibility to communicate with 2 flashes in 
parrallel using the dual flash mode, 8 data lines are then used.
Usage of cs-gpios populated and spi-tx-bus-width / spi-rx-bus-width both set to 8,
is needed to enable dual flash mode.

The addition of the legacy transfer_one_message() spi callback is also needed
as currently the stm32-qspi driver only supports spi_controller_mem_ops API.


Patrice Chotard (2):
  ARM: dts: stm32: Create separate pinmux for qspi cs pin in
    stm32mp15-pinctrl.dtsi
  spi: stm32_qspi: Add transfer_one_message() spi callback

 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi |  50 ++++++----
 arch/arm/boot/dts/stm32mp157c-ev1.dts    |  12 ++-
 drivers/spi/spi-stm32-qspi.c             | 118 +++++++++++++++++++++--
 3 files changed, 152 insertions(+), 28 deletions(-)

-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2022-08-23  7:59 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-23  7:58 patrice.chotard [this message]
2022-08-23  7:58 ` [PATCH v4 0/2] spi: stm32_qspi: use QSPI bus as 8 lines communication channel patrice.chotard
2022-08-23  7:58 ` [PATCH v4 1/2] ARM: dts: stm32: Create separate pinmux for qspi cs pin in stm32mp15-pinctrl.dtsi patrice.chotard
2022-08-23  7:58   ` patrice.chotard
2022-08-26  8:44   ` Alexandre TORGUE
2022-08-26  8:44     ` Alexandre TORGUE
2022-08-23  7:58 ` [PATCH v4 2/2] spi: stm32_qspi: Add transfer_one_message() spi callback patrice.chotard
2022-08-23  7:58   ` patrice.chotard
2022-08-23 16:32 ` (subset) [PATCH v4 0/2] spi: stm32_qspi: use QSPI bus as 8 lines communication channel Mark Brown
2022-08-23 16:32   ` Mark Brown

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=20220823075850.575043-1-patrice.chotard@foss.st.com \
    --to=patrice.chotard@foss.st.com \
    --cc=alexandre.torgue@foss.st.com \
    --cc=broonie@kernel.org \
    --cc=christophe.kerello@foss.st.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-spi@vger.kernel.org \
    --cc=linux-stm32@st-md-mailman.stormreply.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 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.