All, The original author Alanx chiang has left the company. I assigned Ken to help handle the cherrypick task (4.14 and 4.18). Regards, Andy >-----Original Message----- >From: Adrian Bunk [mailto:bunk@xxxxxxxxxx] >Sent: Monday, October 22, 2018 4:39 PM >To: stable@xxxxxxxxxxxxxxx >Cc: Alan Chiang <alanx.chiang@xxxxxxxxx>; Yeh, Andy <andy.yeh@xxxxxxxxx>; >Bartosz Golaszewski <brgl@xxxxxxxx>; linux-i2c@xxxxxxxxxxxxxxx >Subject: 4.14/4.18: Please add "eeprom: at24: Add support for address-width >property" > >Please cherry-pick the following commit to 4.14 and 4.18: > > commit a2b3bf4846e5eed62ea6abb096af2c950961033c > Author: Alan Chiang <alanx.chiang@xxxxxxxxx> > Date: Wed Jul 25 11:20:22 2018 +0800 > > eeprom: at24: Add support for address-width property > > Provide a flexible way to determine the addressing bits of eeprom. > Pass the addressing bits to driver through address-width property. > > Signed-off-by: Alan Chiang <alanx.chiang@xxxxxxxxx> > Signed-off-by: Andy Yeh <andy.yeh@xxxxxxxxx> > Signed-off-by: Bartosz Golaszewski <brgl@xxxxxxxx> > > >Confirmed to work on 4.14 with the Identification Page of an ST M24M02-DR >(256 bytes but 16 bit addressing). > >Cannot be cherry-picked trivially on 4.9. > >The corresponding documentation commit >21d04054501fb27b56e995b54ac74e39aee79a46 >can be cherry-picked to 4.18, the backport for 4.14 is below. > >Thanks >Adrian > > >From 2562e333f39b8077ffb06bdf79430f10b74c11f5 Mon Sep 17 00:00:00 >2001 >From: Alan Chiang <alanx.chiang@xxxxxxxxx> >Date: Wed, 25 Jul 2018 11:20:21 +0800 >Subject: [PATCH] dt-bindings: at24: Add address-width property > >Currently the only way to use a variant of a supported model with a different >address width is to define a new compatible string and the corresponding chip >data structure. > >Provide a flexible way to specify the size of the address pointer by defining a >new property: address-width. > >Signed-off-by: Alan Chiang <alanx.chiang@xxxxxxxxx> >Signed-off-by: Andy Yeh <andy.yeh@xxxxxxxxx> >Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> >Reviewed-by: Rob Herring <robh@xxxxxxxxxx> >[Bartosz: fixed the commit message] >Signed-off-by: Bartosz Golaszewski <brgl@xxxxxxxx> [Adrian Bunk: backported >to 4.14] >Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx> >--- > Documentation/devicetree/bindings/eeprom/eeprom.txt | 2 ++ > 1 file changed, 2 insertions(+) > >diff --git a/Documentation/devicetree/bindings/eeprom/eeprom.txt >b/Documentation/devicetree/bindings/eeprom/eeprom.txt >index afc04589eadf..44bfffc43bed 100644 >--- a/Documentation/devicetree/bindings/eeprom/eeprom.txt >+++ b/Documentation/devicetree/bindings/eeprom/eeprom.txt >@@ -36,6 +36,8 @@ Optional properties: > > - read-only: this parameterless property disables writes to the eeprom > >+ - address-width: number of address bits (one of 8, 16). >+ > Example: > > eeprom@52 { >-- >2.11.0
