From: Miquel Raynal <miquel.raynal@bootlin.com> To: Rob Herring <robh+dt@kernel.org>, <devicetree@vger.kernel.org> Cc: Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Tudor Ambarus <Tudor.Ambarus@microchip.com>, <linux-mtd@lists.infradead.org>, Naga Sureshkumar Relli <nagasure@xilinx.com>, Michal Simek <monstr@monstr.eu>, Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Miquel Raynal <miquel.raynal@bootlin.com> Subject: [PATCH v2 0/5] Bring GPIO CS support to the Arasan controller driver Date: Mon, 10 May 2021 18:31:09 +0200 [thread overview] Message-ID: <20210510163114.24965-1-miquel.raynal@bootlin.com> (raw) Hello, This is a short series bringing a useful feature for drivers which are a little bit constrained regarding their number of native CS. As manufacturer tend to group chips in arrays to enlarge the overall available space, it might be useful to other controller drivers to make use of the added DT property (cs-gpios) as well as the core helper which is being introduced to parse this DT property and returned a CS array with either empty cells (native CS are being used) or a GPIO descriptor structure pointer (GPIO CS). This is applied to the Arasan NAND controller driver which involved a little bit more boilerplate than estimated I thought due to its internal constraints regarding the bond between CS and RB. Cheers, Miquèl Changes in v2: * Added a missing MODULE_EXPORT() reported by kernel test robot. Changes in v2: * Rebased on top of v5.13-rc1 * This time I'm CC'ing Rob + DT ML... Miquel Raynal (5): dt-binding: mtd: nand: Document gpio-cs property mtd: rawnand: Move struct gpio_desc declaration to the top mtd: rawnand: Add a helper to parse the gpio-cs DT property mtd: rawnand: arasan: Ensure proper configuration for the asserted target mtd: rawnand: arasan: Leverage additional GPIO CS .../bindings/mtd/nand-controller.yaml | 16 +- drivers/mtd/nand/raw/arasan-nand-controller.c | 238 +++++++++++++----- drivers/mtd/nand/raw/nand_base.c | 39 +++ include/linux/mtd/rawnand.h | 6 +- 4 files changed, 241 insertions(+), 58 deletions(-) -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com> To: Rob Herring <robh+dt@kernel.org>, <devicetree@vger.kernel.org> Cc: Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Tudor Ambarus <Tudor.Ambarus@microchip.com>, <linux-mtd@lists.infradead.org>, Naga Sureshkumar Relli <nagasure@xilinx.com>, Michal Simek <monstr@monstr.eu>, Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Miquel Raynal <miquel.raynal@bootlin.com> Subject: [PATCH v2 0/5] Bring GPIO CS support to the Arasan controller driver Date: Mon, 10 May 2021 18:31:09 +0200 [thread overview] Message-ID: <20210510163114.24965-1-miquel.raynal@bootlin.com> (raw) Hello, This is a short series bringing a useful feature for drivers which are a little bit constrained regarding their number of native CS. As manufacturer tend to group chips in arrays to enlarge the overall available space, it might be useful to other controller drivers to make use of the added DT property (cs-gpios) as well as the core helper which is being introduced to parse this DT property and returned a CS array with either empty cells (native CS are being used) or a GPIO descriptor structure pointer (GPIO CS). This is applied to the Arasan NAND controller driver which involved a little bit more boilerplate than estimated I thought due to its internal constraints regarding the bond between CS and RB. Cheers, Miquèl Changes in v2: * Added a missing MODULE_EXPORT() reported by kernel test robot. Changes in v2: * Rebased on top of v5.13-rc1 * This time I'm CC'ing Rob + DT ML... Miquel Raynal (5): dt-binding: mtd: nand: Document gpio-cs property mtd: rawnand: Move struct gpio_desc declaration to the top mtd: rawnand: Add a helper to parse the gpio-cs DT property mtd: rawnand: arasan: Ensure proper configuration for the asserted target mtd: rawnand: arasan: Leverage additional GPIO CS .../bindings/mtd/nand-controller.yaml | 16 +- drivers/mtd/nand/raw/arasan-nand-controller.c | 238 +++++++++++++----- drivers/mtd/nand/raw/nand_base.c | 39 +++ include/linux/mtd/rawnand.h | 6 +- 4 files changed, 241 insertions(+), 58 deletions(-) -- 2.27.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next reply other threads:[~2021-05-10 16:31 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-10 16:31 Miquel Raynal [this message] 2021-05-10 16:31 ` [PATCH v2 0/5] Bring GPIO CS support to the Arasan controller driver Miquel Raynal 2021-05-10 16:31 ` [PATCH v3 1/5] dt-binding: mtd: nand: Document gpio-cs property Miquel Raynal 2021-05-10 16:31 ` [PATCH v3 2/5] mtd: rawnand: Move struct gpio_desc declaration to the top Miquel Raynal 2021-05-10 16:31 ` [PATCH v3 3/5] mtd: rawnand: Add a helper to parse the gpio-cs DT property Miquel Raynal 2021-05-10 16:31 ` [PATCH v3 4/5] mtd: rawnand: arasan: Ensure proper configuration for the asserted target Miquel Raynal 2021-05-10 16:31 ` [PATCH v3 5/5] mtd: rawnand: arasan: Leverage additional GPIO CS Miquel Raynal -- strict thread matches above, loose matches on Subject: below -- 2021-05-10 10:40 [PATCH v2 0/5] Bring GPIO CS support to the Arasan controller driver Miquel Raynal 2021-05-10 10:40 ` Miquel Raynal
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=20210510163114.24965-1-miquel.raynal@bootlin.com \ --to=miquel.raynal@bootlin.com \ --cc=Tudor.Ambarus@microchip.com \ --cc=devicetree@vger.kernel.org \ --cc=linux-mtd@lists.infradead.org \ --cc=monstr@monstr.eu \ --cc=nagasure@xilinx.com \ --cc=richard@nod.at \ --cc=robh+dt@kernel.org \ --cc=thomas.petazzoni@bootlin.com \ --cc=vigneshr@ti.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: linkBe 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.