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dt-bindings: Update omap l4 binding for optional registers 

The interconnects on omap variants have configuration registers.
There are registers for a link agent, one or more interconnect
agent, and an optional access protection.

Let's also update the example for omap4 l4 per instance as it
has multiple interconnect agent registers.

For more information, see chapter "Interconnect" in TI techical
reference manuals.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2018-07-05 22:41:12 -07:00
parent ce397d215c
commit 8b1d9676a8
1 changed files with 13 additions and 2 deletions
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15
Documentation/devicetree/bindings/arm/omap/l4.txt
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@ -7,6 +7,7 @@ Required properties:
Should be "ti,omap2-l4-wkup" for OMAP2 family l4 wkup bus
Should be "ti,omap3-l4-core" for OMAP3 family l4 core bus
Should be "ti,omap4-l4-cfg" for OMAP4 family l4 cfg bus
Should be "ti,omap4-l4-per" for OMAP4 family l4 per bus
Should be "ti,omap4-l4-wkup" for OMAP4 family l4 wkup bus
Should be "ti,omap5-l4-cfg" for OMAP5 family l4 cfg bus
Should be "ti,omap5-l4-wkup" for OMAP5 family l4 wkup bus
@ -15,11 +16,21 @@ Required properties:
Should be "ti,am3-l4-wkup" for AM33xx family l4 wkup bus
Should be "ti,am4-l4-wkup" for AM43xx family l4 wkup bus
- ranges : contains the IO map range for the bus
- reg : registers link agent and interconnect agent and access protection
- reg-names : "la" for link agent, "ia0" to "ia3" for one to three
interconnect agent instances, "ap" for access if it exists
Examples:
l4: l4@48000000 {
compatible "ti,omap2-l4", "simple-bus";
l4: interconnect@48000000 {
compatible "ti,omap4-l4-per", "simple-bus";
reg = <0x48000000 0x800>,
<0x48000800 0x800>,
<0x48001000 0x400>,
<0x48001400 0x400>,
<0x48001800 0x400>,
<0x48001c00 0x400>;
reg-names = "ap", "la", "ia0", "ia1", "ia2", "ia3";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x48000000 0x100000>;