On 9/14/20 11:22 AM, Lokesh Vutla wrote: > Add support for J7200 Common Processor Board. > The EVM architecture is very similar to J721E as follows: > > +------------------------------------------------------+ > | +-------------------------------------------+ | > | | | | > | | Add-on Card 1 Options | | > | | | | > | +-------------------------------------------+ | > | | > | | > | +-------------------+ | > | | | | > | | SOM | | > | +--------------+ | | | > | | | | | | > | | Add-on | +-------------------+ | > | | Card 2 | | Power Supply > | | Options | | | > | | | | | > | +--------------+ | <--- > +------------------------------------------------------+ > Common Processor Board > > Common Processor board is the baseboard that has most of the actual > connectors, power supply etc. A SOM (System on Module) is plugged on > to the common processor board and this contains the SoC, PMIC, DDR and > basic high speed components necessary for functionality. > > Note: > * The minimum configuration required to boot up the board is System On > Module(SOM) + Common Processor Board. > * Since there is just a single SOM and Common Processor Board, we are > maintaining common processor board as the base dts and SOM as the dtsi > that we include. In the future as more SOM's appear, we should move > common processor board as a dtsi and include configurations as dts. > * All daughter cards beyond the basic boards shall be maintained as > overlays. > > Reviewed-by: Grygorii Strashko <grygorii.strashko@xxxxxx> > Signed-off-by: Lokesh Vutla <lokeshvutla@xxxxxx> > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx> > --- > arch/arm64/boot/dts/ti/Makefile | 2 + > .../dts/ti/k3-j7200-common-proc-board.dts | 64 +++++++++++++++++++ > arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 29 +++++++++ > 3 files changed, 95 insertions(+) > create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > create mode 100644 arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > > diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile > index 7f28be62b8da..65506f21ba30 100644 > --- a/arch/arm64/boot/dts/ti/Makefile > +++ b/arch/arm64/boot/dts/ti/Makefile > @@ -9,3 +9,5 @@ > dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb > > dtb-$(CONFIG_ARCH_K3) += k3-j721e-common-proc-board.dtb > + > +dtb-$(CONFIG_ARCH_K3) += k3-j7200-common-proc-board.dtb > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > new file mode 100644 > index 000000000000..e27069317c4e > --- /dev/null > +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts > @@ -0,0 +1,64 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/ > + */ > + > +/dts-v1/; > + > +#include "k3-j7200-som-p0.dtsi" > + > +/ { > + chosen { > + stdout-path = "serial2:115200n8"; > + bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000"; > + }; > +}; > + > +&wkup_uart0 { > + /* Wakeup UART is used by System firmware */ > + status = "disabled"; > +}; > + > +&main_uart0 { > + power-domains = <&k3_pds 146 TI_SCI_PD_SHARED>; Perhaps a comment here to explain why this is being overwritten to use PD_SHARED. I don't see anything in the Changelog either. Otherwise, looks good. regards Suman > +}; > + > +&main_uart2 { > + /* MAIN UART 2 is used by R5F firmware */ > + status = "disabled"; > +}; > + > +&main_uart3 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart4 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart5 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart6 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart7 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart8 { > + /* UART not brought out */ > + status = "disabled"; > +}; > + > +&main_uart9 { > + /* UART not brought out */ > + status = "disabled"; > +}; > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > new file mode 100644 > index 000000000000..f7e271c442a0 > --- /dev/null > +++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > @@ -0,0 +1,29 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/ > + */ > + > +/dts-v1/; > + > +#include "k3-j7200.dtsi" > + > +/ { > + memory@80000000 { > + device_type = "memory"; > + /* 4G RAM */ > + reg = <0x00 0x80000000 0x00 0x80000000>, > + <0x08 0x80000000 0x00 0x80000000>; > + }; > + > + reserved_memory: reserved-memory { > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + > + secure_ddr: optee@9e800000 { > + reg = <0x00 0x9e800000 0x00 0x01800000>; > + alignment = <0x1000>; > + no-map; > + }; > + }; > +}; >
