diff options
| author | Conor Dooley <conor.dooley@microchip.com> | 2025-11-10 14:23:51 +0300 |
|---|---|---|
| committer | Conor Dooley <conor.dooley@microchip.com> | 2025-12-20 22:03:24 +0300 |
| commit | 6f86a41d2162eea97946a952de4032db149d54c8 (patch) | |
| tree | 2d0889f6087af075c85cd0cbfac5cf02e7b4619e | |
| parent | 8f0b4cce4481fb22653697cced8d0d04027cb1e8 (diff) | |
| download | linux-6f86a41d2162eea97946a952de4032db149d54c8.tar.xz | |
riscv: dts: microchip: fix mailbox description
When the binding for the mailbox on PolarFire SoC was originally
written, and later modified, mistakes were made - and the precise
nature of the later modification should have been a giveaway, but alas
I was naive at the time.
A more correct modelling of the hardware is to use two syscons and have
a single reg entry for the mailbox, containing the mailbox region. The
two syscons contain the general control/status registers for the mailbox
and the interrupt related registers respectively. The reason for two
syscons is that the same mailbox is present on the non-SoC version of
the FPGA, which has no interrupt controller, and the shared part of the
rtl was unchanged between devices.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
| -rw-r--r-- | arch/riscv/boot/dts/microchip/mpfs.dtsi | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi index 9883ca3554c5..f9d6bf08e717 100644 --- a/arch/riscv/boot/dts/microchip/mpfs.dtsi +++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi @@ -259,6 +259,11 @@ #reset-cells = <1>; }; + sysreg_scb: syscon@20003000 { + compatible = "microchip,mpfs-sysreg-scb", "syscon"; + reg = <0x0 0x20003000 0x0 0x1000>; + }; + ccc_se: clock-controller@38010000 { compatible = "microchip,mpfs-ccc"; reg = <0x0 0x38010000 0x0 0x1000>, <0x0 0x38020000 0x0 0x1000>, @@ -521,10 +526,14 @@ status = "disabled"; }; - mbox: mailbox@37020000 { + control_scb: syscon@37020000 { + compatible = "microchip,mpfs-control-scb", "syscon"; + reg = <0x0 0x37020000 0x0 0x100>; + }; + + mbox: mailbox@37020800 { compatible = "microchip,mpfs-mailbox"; - reg = <0x0 0x37020000 0x0 0x58>, <0x0 0x2000318C 0x0 0x40>, - <0x0 0x37020800 0x0 0x100>; + reg = <0x0 0x37020800 0x0 0x1000>; interrupt-parent = <&plic>; interrupts = <96>; #mbox-cells = <1>; |