Messages in this thread | | | From | peng.fan@nxp ... | Subject | [PATCH V3 0/4] mailbox/firmware: imx: support SCU channel type | Date | Wed, 26 Feb 2020 12:40:39 +0800 |
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From: Peng Fan <peng.fan@nxp.com>
V3: Rebase to Shawn's for-next Include fsl,imx8-mu-scu compatible Per Oleksij's comments, introduce generic tx/rx and added scu mu type Check fsl,imx8-mu-scu in firmware driver for fast_ipc
V2: Drop patch 1/3 which added fsl,scu property Force to use scu channel type when machine has node compatible "fsl,imx-scu" Force imx-scu to use fast_ipc
I not found a generic method to make SCFW message generic enough, SCFW message is not fixed length including TX and RX. And it use TR0/RR0 interrupt.
It might need https://patchwork.kernel.org/patch/11395247/ to avoid build break.
V1: Sorry to bind the mailbox/firmware patch together. This is make it to understand what changed to support using 1 TX and 1 RX channel for SCFW message.
Per i.MX8QXP Reference mannual, there are several message using examples. One of them is: Passing short messages: Transmit register(s) can be used to pass short messages from one to four words in length. For example, when a four-word message is desired, only one of the registers needs to have its corresponding interrupt enable bit set at the receiver side.
This patchset is to using this for SCFW message to replace four TX and four RX method.
Peng Fan (4): dt-bindings: mailbox: imx-mu: add SCU MU support mailbox: imx: restructure code to make easy for new MU mailbox: imx: add SCU MU support firmware: imx-scu: Support one TX and one RX
.../devicetree/bindings/mailbox/fsl,mu.txt | 2 + drivers/firmware/imx/imx-scu.c | 54 +++++-- drivers/mailbox/imx-mailbox.c | 165 ++++++++++++++++----- 3 files changed, 176 insertions(+), 45 deletions(-)
base-commit: 48b4bfe7105f646e270596bf9d22df0e8a4ae217 -- 2.16.4
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