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arm: dts: k3-am654: add needed regs to udmap nodes

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Ethernet is one of a few IPs in U-Boot that depend on DMA to operate.
However there are a few missing registers ranges in the udmap nodes
need to properly setup DMA for the am65x.

A fix has been added to the Linux kernel[0] to add these ranges however
they have not made it to a Linux tag. To keep DMA operational until the
next DT sync from Linux, add these ranges to the *-u-boot.dtsi with a
note for our future selves.

[0] https://lore.kernel.org/r/20231213135138.929517-2-vigneshr@ti.com

Tested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Bryan Brattlof 2023-12-29 11:47:09 -06:00 committed by Tom Rini
parent 194641300c
commit 5e00547e58
1 changed files with 34 additions and 0 deletions
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34
arch/arm/dts/k3-am654-base-board-u-boot.dtsi
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@ -252,3 +252,37 @@
&mcu_r5fss0 {
ti,cluster-mode = <0>;
};
/*
* The DMA driver requires a few extra register ranges
* which are missing for the am65x. A patch has been
* sent and will be synced after the v6.8-rc1 linux
* tag is published
*/
&main_udmap {
reg = <0x0 0x31150000 0x0 0x100>,
<0x0 0x34000000 0x0 0x100000>,
<0x0 0x35000000 0x0 0x100000>,
<0x0 0x30b00000 0x0 0x10000>,
<0x0 0x30c00000 0x0 0x10000>,
<0x0 0x30d00000 0x0 0x8000>;
reg-names = "gcfg", "rchanrt", "tchanrt",
"tchan", "rchan", "rflow";
};
/*
* The DMA driver requires a few extra register ranges
* which are missing for the am65x. A patch has been
* sent and will be synced after the v6.8-rc1 linux
* tag is published
*/
&mcu_udmap {
reg = <0x0 0x285c0000 0x0 0x100>,
<0x0 0x2a800000 0x0 0x40000>,
<0x0 0x2aa00000 0x0 0x40000>,
<0x0 0x284a0000 0x0 0x4000>,
<0x0 0x284c0000 0x0 0x4000>,
<0x0 0x28400000 0x0 0x2000>;
reg-names = "gcfg", "rchanrt", "tchanrt",
"tchan", "rchan", "rflow";
};