* [PATCH V3 1/5] dt-bindings: mailbox: allow mbox-cells to be equal to 0 [not found] <1529676720-7533-1-git-send-email-aisheng.dong@nxp.com> @ 2018-06-22 14:11 ` Dong Aisheng 2018-06-25 17:17 ` Rob Herring 0 siblings, 1 reply; 2+ messages in thread From: Dong Aisheng @ 2018-06-22 14:11 UTC (permalink / raw) To: linux-arm-kernel Cc: dongas86, kernel, shawnguo, fabio.estevam, linux-imx, Dong Aisheng, Rob Herring, Mark Rutland, Sudeep Holla, devicetree, linux-kernel Mailbox devices may have only one channel which means the mbox-cells at least 1 does not make sense for this type devices. Let's remove that limitation to allow the mbox-cells to be equal to 0. Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> --- ChangeLog: * New patch introduced in v3 series * Actually there're already users in kernel with mbox-cells set to 0. See: arch/arm/boot/dts/bcm283x.dtsi:145: #mbox-cells = <0>; --- Documentation/devicetree/bindings/mailbox/mailbox.txt | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt index af8ecee..c2fcd05 100644 --- a/Documentation/devicetree/bindings/mailbox/mailbox.txt +++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt @@ -6,8 +6,7 @@ assign appropriate mailbox channel to client drivers. * Mailbox Controller Required property: -- #mbox-cells: Must be at least 1. Number of cells in a mailbox - specifier. +- #mbox-cells: Number of cells in a mailbox specifier. Example: mailbox: mailbox { -- 2.7.4 ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH V3 1/5] dt-bindings: mailbox: allow mbox-cells to be equal to 0 2018-06-22 14:11 ` [PATCH V3 1/5] dt-bindings: mailbox: allow mbox-cells to be equal to 0 Dong Aisheng @ 2018-06-25 17:17 ` Rob Herring 0 siblings, 0 replies; 2+ messages in thread From: Rob Herring @ 2018-06-25 17:17 UTC (permalink / raw) To: Dong Aisheng Cc: linux-arm-kernel, dongas86, kernel, shawnguo, fabio.estevam, linux-imx, Mark Rutland, Sudeep Holla, devicetree, linux-kernel On Fri, Jun 22, 2018 at 10:11:56PM +0800, Dong Aisheng wrote: > Mailbox devices may have only one channel which means the mbox-cells > at least 1 does not make sense for this type devices. Let's remove > that limitation to allow the mbox-cells to be equal to 0. > > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Sudeep Holla <sudeep.holla@arm.com> > Cc: devicetree@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> > --- > ChangeLog: > * New patch introduced in v3 series > * Actually there're already users in kernel with mbox-cells set to 0. > See: > arch/arm/boot/dts/bcm283x.dtsi:145: #mbox-cells = <0>; > --- > Documentation/devicetree/bindings/mailbox/mailbox.txt | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) Reviewed-by: Rob Herring <robh@kernel.org> ^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-06-22 14:11 ` [PATCH V3 1/5] dt-bindings: mailbox: allow mbox-cells to be equal to 0 Dong Aisheng
2018-06-25 17:17 ` Rob Herring
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