linux-kernel - [RFC PATCH 0/4] bus: ti-sysc: Add generic enable/disable & PRUSS

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Date:   Tue, 2 Apr 2019 16:37:48 +0300
From:   Roger Quadros <rogerq@...com>
To:     <tony@...mide.com>
CC:     <nsekhar@...com>, <s-anna@...com>, <linux-kernel@...r.kernel.org>,
        Roger Quadros <rogerq@...com>
Subject: [RFC PATCH 0/4] bus: ti-sysc: Add generic enable/disable & PRUSS

Hi Tony,

Non legacy modules will rely on generic enable/disable functions.

I had to disable usb_otg_ss3 and 4 on am57xx idk to be able to boot.
It is explicitly stated in TRM to not use USB3 and 4 on AM57xx, and
I haven't seen any dra7 based board using them so let's keep it disabled.

Handle the PRU-ICSS type as it needs some special handling especially
during suspend/resume.

cheers,
-roger

Roger Quadros (4):
  ARM: dts: dra7: Keep usb_otg_ss3 and usb_otg_ss4 disabled
  bus: ti-sysc: Add generic enable/disable functions
  bus: ti-sysc: Add support for PRU-ICSS type
  bus: ti-sysc: Ensure PRU-ICSS doesn't break suspend/resume

 .../devicetree/bindings/bus/ti-sysc.txt       |   1 +
 arch/arm/boot/dts/dra7-l4.dtsi                |   2 +
 drivers/bus/ti-sysc.c                         | 171 ++++++++++++++++++
 include/linux/platform_data/ti-sysc.h         |   7 +-
 4 files changed, 180 insertions(+), 1 deletion(-)

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