On 11:43-20231221, Bryan Brattlof wrote: > 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-vigne...@ti.com > Signed-off-by: Bryan Brattlof <b...@ti.com> > --- > arch/arm/dts/k3-am654-base-board-u-boot.dtsi | 32 ++++++++++++++++++++ > 1 file changed, 32 insertions(+) > > diff --git a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi > b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi > index 9cd8c353c515b..645241da322a5 100644 > --- a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi > +++ b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi > @@ -260,3 +260,35 @@ > &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 > + */
Please fix multi-line comment style: /* * blah blah */ instead of /* blah blah * more stuff */ > +&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 > + */ and here. > +&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"; > +}; > -- > 2.43.0 > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D