Merge patch series "Introduce J742S2 SoC and EVM"

Manorit Chawdhry <m-chawdhry@ti.com> says:

The series adds support for J742S2 family of SoCs. Also adds J742S2 EVM
Support and re-uses most of the stuff from the superset device J784s4.

This device is a subset of J784S4 and shares the same memory map and
thus the code is being reused from J784S4 to avoid duplication.

It initially cleans up the J784s4 and AM69 files so that they can be
re-usable for j742s2 and then it introduces J742S2.

The DT for the following SoC will be coming to U-boot during 6.13 Sync
so the series is kept as RFC till then.

Here are some of the salient features of the J742S2 automotive grade
application processor:

The J742S2 SoC belongs to the K3 Multicore SoC architecture platform,
providing advanced system integration in automotive, ADAS and industrial
applications requiring AI at the network edge. This SoC extends the K3
Jacinto 7 family of SoCs with focus on raising performance and
integration while providing interfaces, memory architecture and compute
performance for multi-sensor, high concurrency applications.

Some changes that this devices has from J784S4 are:
* 4x Cortex-A72 vs 8x Cortex-A72
* 3x C7x DSP vs 4x C7x DSP
* 4 port ethernet switch vs 8 port ethernet switch
* 2 DDR controller vs 4 DDR controller

Test logs:
https://gist.github.com/manorit2001/f7df0e8cca1e9973b4361f0559c6f53d

Link: https://lore.kernel.org/r/20250317-b4-upstream-j742s2-v4-0-4ba88bfd357a@ti.com

3 files changed, 47 insertions, 0 deletions

diff --git a/board/ti/j784s4/Kconfig b/board/ti/j784s4/Kconfig
index 490c7be66b3..de95ac575d7 100644
--- a/board/ti/j784s4/Kconfig
+++ b/board/ti/j784s4/Kconfig
@@ -35,3 +35,36 @@ config SPL_LDSCRIPT
 source "board/ti/common/Kconfig"
 
 endif
+
+if TARGET_J742S2_A72_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+source "board/ti/common/Kconfig"
+
+endif
+
+if TARGET_J742S2_R5_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+config SPL_LDSCRIPT
+	default "arch/arm/mach-omap2/u-boot-spl.lds"
+
+source "board/ti/common/Kconfig"
+
+endif
diff --git a/board/ti/j784s4/MAINTAINERS b/board/ti/j784s4/MAINTAINERS
index e92e8d03cb3..b289c639f3f 100644
--- a/board/ti/j784s4/MAINTAINERS
+++ b/board/ti/j784s4/MAINTAINERS
@@ -20,3 +20,13 @@ F:	arch/arm/dts/k3-am69-sk-u-boot.dtsi
 F:	arch/arm/dts/k3-am69-r5-sk.dts
 F:	configs/am69_sk_r5_defconfig
 F:	configs/am69_sk_a72_defconfig
+
+J742S2 EVM BOARD
+M:	Manorit Chawdhry <m-chawdhry@ti.com>
+S:	Maintained
+F:	arch/arm/dts/k3-j784s4-j742s2-ddr.dtsi
+F:	arch/arm/dts/k3-j742s2-r5-evm.dts
+F:	arch/arm/dts/k3-j742s2-evm-u-boot.dtsi
+F:	arch/arm/dts/k3-j742s2-ddr-evm-lp4-4266.dtsi
+F:	configs/j742s2_evm_r5_defconfig
+F:	configs/j742s2_evm_a72_defconfig
diff --git a/board/ti/j784s4/j784s4.env b/board/ti/j784s4/j784s4.env
index f5b72c7505e..9e1741be424 100644
--- a/board/ti/j784s4/j784s4.env
+++ b/board/ti/j784s4/j784s4.env
@@ -20,4 +20,8 @@ bootpart=1:2
 bootdir=/boot
 rd_spec=-
 
+#if CONFIG_TARGET_J784S4_A72_EVM
 rproc_fw_binaries= 2 /lib/firmware/j784s4-main-r5f0_0-fw 3 /lib/firmware/j784s4-main-r5f0_1-fw 4 /lib/firmware/j784s4-main-r5f1_0-fw 5 /lib/firmware/j784s4-main-r5f1_1-fw 6 /lib/firmware/j784s4-main-r5f2_0-fw 7 /lib/firmware/j784s4-main-r5f2_1-fw 8 /lib/firmware/j784s4-c71_0-fw 9 /lib/firmware/j784s4-c71_1-fw 10 /lib/firmware/j784s4-c71_2-fw 11 /lib/firmware/j784s4-c71_3-fw
+#elif CONFIG_TARGET_J742S2_A72_EVM
+rproc_fw_binaries= 2 /lib/firmware/j742s2-main-r5f0_0-fw 3 /lib/firmware/j742s2-main-r5f0_1-fw 4 /lib/firmware/j742s2-main-r5f1_0-fw 5 /lib/firmware/j742s2-main-r5f1_1-fw 6 /lib/firmware/j742s2-main-r5f2_0-fw 7 /lib/firmware/j742s2-main-r5f2_1-fw 8 /lib/firmware/j742s2-c71_0-fw 9 /lib/firmware/j742s2-c71_1-fw 10 /lib/firmware/j742s2-c71_2-fw
+#endif