From: Rob Herring <robh@kernel.org> To: Dong Aisheng <aisheng.dong@nxp.com> Cc: Mark Rutland <mark.rutland@arm.com>, devicetree@vger.kernel.org, dongas86@gmail.com, linux-imx@nxp.com, kernel@pengutronix.de, fabio.estevam@nxp.com, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH V2 2/4] dt-bindings: arm: fsl: add mu binding doc Date: Wed, 20 Jun 2018 13:43:10 -0600 [thread overview] Message-ID: <20180620194310.GA28983@rob-hp-laptop> (raw) In-Reply-To: <1529239789-26849-3-git-send-email-aisheng.dong@nxp.com> On Sun, Jun 17, 2018 at 08:49:47PM +0800, Dong Aisheng wrote: > The Messaging Unit module enables two processors within > the SoC to communicate and coordinate by passing messages > (e.g. data, status and control) through the MU interface. > > Cc: Shawn Guo <shawnguo@kernel.org> > Cc: Sascha Hauer <kernel@pengutronix.de> > Cc: Fabio Estevam <fabio.estevam@nxp.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: devicetree@vger.kernel.org > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> > --- > v1->v2: > * typo fixes > * remove status property > * remove imx6&7 compatible string which may be added later for > the generic mailbox binding > > Note: Because MU used by SCU is not implemented as a mailbox driver, > Instead, they're provided in library calls to gain higher performance. Using a binding doesn't mean you have to use an OS's subsystem. What needs higher performance? What's the performance difference? Why can't the mailbox framework be improved? > Futhermore, SCU MU has only one channel. But the binding doc claims > (Change to allow 0?) > So we did not follow the mailbox binding. > > For the generic mailbox driver binding way, it may be added later. The h/w isn't changing later, so no. > --- > .../devicetree/bindings/arm/freescale/fsl,mu.txt | 32 ++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,mu.txt
WARNING: multiple messages have this Message-ID (diff)
From: robh@kernel.org (Rob Herring) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V2 2/4] dt-bindings: arm: fsl: add mu binding doc Date: Wed, 20 Jun 2018 13:43:10 -0600 [thread overview] Message-ID: <20180620194310.GA28983@rob-hp-laptop> (raw) In-Reply-To: <1529239789-26849-3-git-send-email-aisheng.dong@nxp.com> On Sun, Jun 17, 2018 at 08:49:47PM +0800, Dong Aisheng wrote: > The Messaging Unit module enables two processors within > the SoC to communicate and coordinate by passing messages > (e.g. data, status and control) through the MU interface. > > Cc: Shawn Guo <shawnguo@kernel.org> > Cc: Sascha Hauer <kernel@pengutronix.de> > Cc: Fabio Estevam <fabio.estevam@nxp.com> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: devicetree at vger.kernel.org > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> > --- > v1->v2: > * typo fixes > * remove status property > * remove imx6&7 compatible string which may be added later for > the generic mailbox binding > > Note: Because MU used by SCU is not implemented as a mailbox driver, > Instead, they're provided in library calls to gain higher performance. Using a binding doesn't mean you have to use an OS's subsystem. What needs higher performance? What's the performance difference? Why can't the mailbox framework be improved? > Futhermore, SCU MU has only one channel. But the binding doc claims > (Change to allow 0?) > So we did not follow the mailbox binding. > > For the generic mailbox driver binding way, it may be added later. The h/w isn't changing later, so no. > --- > .../devicetree/bindings/arm/freescale/fsl,mu.txt | 32 ++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,mu.txt
next prev parent reply other threads:[~2018-06-20 19:43 UTC|newest] Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-06-17 12:49 [PATCH V2 0/4] soc: imx: add scu firmware api support Dong Aisheng 2018-06-17 12:49 ` [PATCH V2 1/4] soc: imx: add mu library functions support Dong Aisheng 2018-06-17 12:49 ` [PATCH V2 2/4] dt-bindings: arm: fsl: add mu binding doc Dong Aisheng 2018-06-17 12:49 ` Dong Aisheng 2018-06-20 19:43 ` Rob Herring [this message] 2018-06-20 19:43 ` Rob Herring 2018-06-21 7:46 ` Sascha Hauer 2018-06-21 7:46 ` Sascha Hauer 2018-06-21 17:11 ` A.s. Dong 2018-06-21 17:11 ` A.s. Dong 2018-06-21 18:08 ` Oleksij Rempel 2018-06-21 18:08 ` Oleksij Rempel 2018-06-22 3:31 ` A.s. Dong 2018-06-22 3:31 ` A.s. Dong 2018-06-22 4:59 ` Oleksij Rempel 2018-06-22 4:59 ` Oleksij Rempel 2018-06-22 5:59 ` A.s. Dong 2018-06-22 5:59 ` A.s. Dong 2018-06-22 6:48 ` Oleksij Rempel 2018-06-22 6:48 ` Oleksij Rempel 2018-06-22 8:16 ` A.s. Dong 2018-06-22 8:16 ` A.s. Dong 2018-06-22 5:49 ` Sascha Hauer 2018-06-22 5:49 ` Sascha Hauer 2018-06-22 6:04 ` A.s. Dong 2018-06-22 6:04 ` A.s. Dong 2018-06-17 12:49 ` [PATCH V2 3/4] dt-bindings: arm: fsl: add scu " Dong Aisheng 2018-06-17 12:49 ` Dong Aisheng 2018-06-20 19:44 ` Rob Herring 2018-06-20 19:44 ` Rob Herring 2018-06-21 3:38 ` A.s. Dong 2018-06-21 3:38 ` A.s. Dong 2018-06-21 7:37 ` Sascha Hauer 2018-06-21 7:37 ` Sascha Hauer 2018-06-21 12:05 ` A.s. Dong 2018-06-21 12:05 ` A.s. Dong [not found] ` <1529239789-26849-5-git-send-email-aisheng.dong@nxp.com> 2018-06-18 8:58 ` [PATCH V2 4/4] soc: imx: add SC firmware IPC and APIs Leonard Crestez
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