riscv: dts: microchip: make the fabric dtsi board specific

Currently mpfs-fabric.dtsi is included by mpfs.dtsi - which is fine
currently since there is only one board with this SoC upstream.

However if another board was added, it would include the fabric contents
of the Icicle Kit's reference design. To avoid this, rename
mpfs-fabric.dtsi to mpfs-icicle-kit-fabric.dtsi & include it in the dts
rather than mpfs.dtsi.

mpfs-icicle-kit-fabric.dtsi specifically matches the 22.03 reference
design for the icicle kit's FPGA fabric & an older version of the
design may not have the i2c or pwm devices - so add the compatible
string to document this.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220509142610.128590-6-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

diff --git a/arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
similarity index 91%
rename from arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi
rename to arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
index ccaac33..0d28858 100644 (file)
--- a/arch/riscv/boot/dts/microchip/mpfs-fabric.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
@@ -2,6 +2,8 @@
 /* Copyright (c) 2020-2021 Microchip Technology Inc */
 
 / {
+       compatible = "microchip,mpfs-icicle-reference-rtlv2203", "microchip,mpfs";
+
        core_pwm0: pwm@41000000 {
                compatible = "microchip,corepwm-rtl-v4";
                reg = <0x0 0x41000000 0x0 0xF0>;

diff --git a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
index 84b0015..739dfa5 100644 (file)
--- a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
+++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
@@ -4,6 +4,7 @@
 /dts-v1/;
 
 #include "mpfs.dtsi"
+#include "mpfs-icicle-kit-fabric.dtsi"
 
 /* Clock frequency (in Hz) of the rtcclk */
 #define RTCCLK_FREQ            1000000

diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 7d2c226..8c32591 100644 (file)
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -3,7 +3,6 @@
 
 /dts-v1/;
 #include "dt-bindings/clock/microchip,mpfs-clock.h"
-#include "mpfs-fabric.dtsi"
 
 / {
        #address-cells = <2>;