[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <171926261715.405330.8493876031546375299.robh@kernel.org>
Date: Mon, 24 Jun 2024 14:56:59 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Théo Lebrun <theo.lebrun@...tlin.com>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Linus Walleij <linus.walleij@...aro.org>,
Stephen Boyd <sboyd@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
linux-gpio@...r.kernel.org,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
linux-clk@...r.kernel.org, "Rafael J. Wysocki" <rafael@...nel.org>,
Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
Lee Jones <lee@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devicetree@...r.kernel.org, Philipp Zabel <p.zabel@...gutronix.de>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: Re: [PATCH v3 4/9] dt-bindings: soc: mobileye: add EyeQ OLB system
controller
On Thu, 20 Jun 2024 19:30:56 +0200, Théo Lebrun wrote:
> Add documentation to describe the "Other Logic Block" system-controller.
> It deals with three platforms: EyeQ5, EyeQ6L and EyeQ6H. First two have
> a single instance, whereas EyeQ6H has seven named instances.
>
> Features provided are:
> - Clocks, children to main crystal. Some PLLs and divider clocks.
> - Resets. Some instances DO NOT have reset.
> - Pinctrl. Only EyeQ5 has such feature.
>
> Those are NOT the only features exposed in OLB system-controllers! Many
> individual registers, related to IP block integration, can be found.
> Additional features will be exposed over time.
>
> We simplify devicetree phandles to OLB in two ways:
>
> - Compatibles exposing a single clock do not ask for a index argument.
> This means we use EyeQ6H OLB south (it has four clocks):
>
> clocks = <&olb_south EQ6HC_SOUTH_PLL_PER>;
>
> But use EyeQ6H OLB east (it has one clock):
>
> clocks = <&olb_east>;
>
> - Compatibles exposing a single reset domain do not ask for a domain
> index, only a reset index.
> This means we use EyeQ5 OLB (it has three domains):
>
> resets = <&olb 0 10>;
>
> But use EyeQ6H west reset (it has one domain):
>
> resets = <&olb_west 3>;
>
> About pinctrl subnodes: all pins have two functionality, either GPIO or
> something-else. The latter is pin dependent, we express constraints
> using many if-then.
>
> Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
> ---
> .../bindings/soc/mobileye/mobileye,eyeq5-olb.yaml | 374 +++++++++++++++++++++
> MAINTAINERS | 2 +
> include/dt-bindings/clock/mobileye,eyeq5-clk.h | 21 ++
> 3 files changed, 397 insertions(+)
>
Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Powered by blists - more mailing lists