* Re: [PATCH] i2c-dev: Introduce "linux,i2c-dev-name" property for device tree of I2C controller. [not found] <20240519165504.19627-1-egyszeregy@freemail.hu> @ 2024-05-29 10:28 ` Wolfram Sang 2024-05-29 16:10 ` Conor Dooley 0 siblings, 1 reply; 2+ messages in thread From: Wolfram Sang @ 2024-05-29 10:28 UTC (permalink / raw) To: egyszeregy, devicetree; +Cc: linux-i2c, linux-kernel [-- Attachment #1: Type: text/plain, Size: 591 bytes --] > Optionally, an I2C controller may have a "linux,i2c-dev-name" property. > This is a string which is defining a custom suffix name for I2C device > in /dev/i2c-<name> format. It helps to improve software portability between > various SoCs and reduce complexities of hardware related codes in SWs. (I thought I already replied to this?) Highly similar to [1] from 2021. I don't have a super clear opinion about this, so I'd need help from the DT maintainers. But the discussion from back then stalled. [1] http://patchwork.ozlabs.org/project/linux-i2c/list/?series=237908 [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 833 bytes --] ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] i2c-dev: Introduce "linux,i2c-dev-name" property for device tree of I2C controller. 2024-05-29 10:28 ` [PATCH] i2c-dev: Introduce "linux,i2c-dev-name" property for device tree of I2C controller Wolfram Sang @ 2024-05-29 16:10 ` Conor Dooley 0 siblings, 0 replies; 2+ messages in thread From: Conor Dooley @ 2024-05-29 16:10 UTC (permalink / raw) To: Wolfram Sang, egyszeregy, devicetree, linux-i2c, linux-kernel [-- Attachment #1: Type: text/plain, Size: 1089 bytes --] On Wed, May 29, 2024 at 12:28:03PM +0200, Wolfram Sang wrote: > > > Optionally, an I2C controller may have a "linux,i2c-dev-name" property. > > This is a string which is defining a custom suffix name for I2C device > > in /dev/i2c-<name> format. It helps to improve software portability between > > various SoCs and reduce complexities of hardware related codes in SWs. > > (I thought I already replied to this?) > > Highly similar to [1] from 2021. I don't have a super clear opinion > about this, so I'd need help from the DT maintainers. But the discussion > from back then stalled. > > [1] http://patchwork.ozlabs.org/project/linux-i2c/list/?series=237908 This patch (or one very similar) got sent to the SPI and GPIO subsystems too. The response was effectively "use udev": https://lore.kernel.org/all/20240519144920.14804-1-egyszeregy@freemail.hu/ https://lore.kernel.org/all/20240519211346.30323-1-egyszeregy@freemail.hu/ This definitely is in "devicetree properties are not for software-policy" territory to me, maybe Rob's changed his mind since 2021. [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 228 bytes --] ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <20240519165504.19627-1-egyszeregy@freemail.hu>
2024-05-29 10:28 ` [PATCH] i2c-dev: Introduce "linux,i2c-dev-name" property for device tree of I2C controller Wolfram Sang
2024-05-29 16:10 ` Conor Dooley
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