roc-rk3308-cc: add

The T-Firefly ROC-RK3308-CC is a miniature and compact main board which is
equipped with a cost-effective RK3308 Core Processor and a high-performance
CODEC.

Features:
- Rockchip RK3308, 64-bit, quad-core, Arm Cortex-A35 processor @ 1.3GHz
- 100M ethernet
- PoE
- USB 2.0 and Type-C (OTG and power)
- 802.11 b/g/n WiFi and Bluetooth 4.2

https://en.t-firefly.com/product/rocrk3308cc

Signed-off-by: Trevor Woerner <twoerner@gmail.com>

README

@@ -36,6 +36,7 @@ Status of supported boards:
 		rock-pi-s
 		rock-5a
 		roc-rk3328-cc
+		roc-rk3308-cc
 	builds:
 		marsboard-rk3066
 		radxarock
@@ -43,17 +44,18 @@ Status of supported boards:
 
 Notes:
 -----
-	The latest ddr initializer for the rk3308 platform (currently only
+	The latest ddr initializer for the rk3308 platform does not output
-	used by the rock-pi-s machine) does not output diagnostic messages
+	diagnostic messages to uart0. This causes a bunch of gibberish to
-	to uart0. This causes a bunch of gibberish to be printed to the
+	be printed to the console window which only becomes legible once
-	console window which only becomes legible once the linux kernel
+	the linux kernel starts. I.e. the console output of the ddr
-	starts. I.e. the console output of the ddr initialization routine,
+	initialization routine, as well as u-boot is lost. An older
-	as well as u-boot is lost. An older version of this same binary
+	version of this same binary blob does, however, support output to
-	blob does, however, support output to uart0 (making its diagnostic
+	uart0 (making its diagnostic messages as well as u-boot available
-	messages as well as u-boot available on the console). By default
+	on the console). By default the build assumes the user would like
-	the build assumes the user would like to see these message and be
+	to see these message and be able to have the option to interact
-	able to have the option to interact with u-boot. Iow: for the
+	with u-boot.
-	rock-pi-s an older version of rkbin is used.
+
+	IOW: for rk3308-based devices, an older version of rkbin is used.
 
 	If, however, the user would prefer to use the latest binary ddr
 	initializer from rkbin, simply set:

conf/machine/roc-rk3308-cc.conf

@@ -0,0 +1,12 @@
+# Copyright (C) 2024  Trevor Woerner
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+#@TYPE: Machine
+#@NAME: roc-rk3308-cc
+#@DESCRIPTION: T-Firefly ROC-RK3308-CC SBC
+#https://en.t-firefly.com/product/rocrk3308cc
+
+require include/rk3308.inc
+
+UBOOT_MACHINE = "roc-cc-rk3308_defconfig"
+KERNEL_DEVICETREE = "rockchip/rk3308-roc-cc.dtb"

recipes-bsp/u-boot/u-boot%.bbappend

@@ -1,6 +1,6 @@
 # various machines require the pyelftools library for parsing dtb files
 DEPENDS:append = " python3-pyelftools-native"
-DEPENDS:append:rock-pi-s = " u-boot-tools-native"
+DEPENDS:append:rk3308 = " u-boot-tools-native"
 DEPENDS:append:rock-pi-4 = " gnutls-native"
 
 EXTRA_OEMAKE:append:px30 = " BL31=${DEPLOY_DIR_IMAGE}/bl31-px30.elf"

recipes-kernel/linux/linux-yocto_%.bbappend

@@ -17,6 +17,7 @@ COMPATIBLE_MACHINE:nanopi-r2s = "nanopi-r2s"
 COMPATIBLE_MACHINE:nanopi-m4b = "nanopi-m4b"
 COMPATIBLE_MACHINE:rock-pi-s = "rock-pi-s"
 COMPATIBLE_MACHINE:roc-rk3328-cc = "roc-rk3328-cc"
+COMPATIBLE_MACHINE:roc-rk3308-cc = "roc-rk3308-cc"
 
 SRC_URI:append = " file://rockchip-kmeta;type=kmeta;name=rockchip-kmeta;destsuffix=rockchip-kmeta"
 SRC_URI:append:nanopi-r4s = " file://nanopi-r4s.scc"