Re: [PATCHv4 2/3] ARM: msm: Add support for APQ8074 Dragonboard

[Kumar Gala <galak@codeaurora.org>]

On Sep 23, 2013, at 10:13 PM, Rohit Vaswani wrote:

> This patch adds basic board support for APQ8074 Dragonboard
> which belongs to the Snapdragon 800 family.
> For now, just support a basic machine with device tree.
> 
> Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
> ---
> arch/arm/Kconfig.debug                         |  9 +++++++
> arch/arm/boot/dts/Makefile                     |  3 ++-
> arch/arm/boot/dts/qcom-apq8074-dragonboard.dts |  6 +++++
> arch/arm/boot/dts/qcom-msm8974.dtsi            | 35 ++++++++++++++++++++++++++
> arch/arm/include/debug/msm.S                   |  5 ++++
> arch/arm/mach-msm/Kconfig                      | 13 ++++++++++
> arch/arm/mach-msm/board-dt.c                   |  9 +++++++
> 7 files changed, 79 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm/boot/dts/qcom-apq8074-dragonboard.dts
> create mode 100644 arch/arm/boot/dts/qcom-msm8974.dtsi
> 
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index e18a6fc..959b2c7 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -357,6 +357,15 @@ choice
> 		  Say Y here if you want the debug print routines to direct
> 		  their output to the serial port on MSM 8960 devices.
> 
> +	config DEBUG_MSM8974_UART
> +		bool "Kernel low-level debugging messages via MSM 8974 UART"
> +		depends on ARCH_MSM8974
> +		select MSM_HAS_DEBUG_UART_HS
> +		select DEBUG_MSM_UART
> +		help
> +		  Say Y here if you want the debug print routines to direct
> +		  their output to the serial port on MSM 8974 devices.
> +

A little surprised you didn't pull this and the ARCH_MSM8974 into its own patch outside of this patch being board support.

> 	config DEBUG_MVEBU_UART
> 		bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)"
> 		depends on ARCH_MVEBU
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 000cf76..e71a3ec 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -102,7 +102,8 @@ dtb-$(CONFIG_ARCH_KIRKWOOD) += kirkwood-cloudbox.dtb \
> 	kirkwood-openblocks_a6.dtb
> dtb-$(CONFIG_ARCH_MARCO) += marco-evb.dtb
> dtb-$(CONFIG_ARCH_MSM) += msm8660-surf.dtb \
> -	msm8960-cdp.dtb
> +	msm8960-cdp.dtb \
> +	qcom-apq8074-dragonboard.dtb
> dtb-$(CONFIG_ARCH_MVEBU) += armada-370-db.dtb \
> 	armada-370-mirabox.dtb \
> 	armada-370-netgear-rn102.dtb \
> diff --git a/arch/arm/boot/dts/qcom-apq8074-dragonboard.dts b/arch/arm/boot/dts/qcom-apq8074-dragonboard.dts
> new file mode 100644
> index 0000000..bb6f3c4
> --- /dev/null
> +++ b/arch/arm/boot/dts/qcom-apq8074-dragonboard.dts
> @@ -0,0 +1,6 @@
> +/include/ "qcom-msm8974.dtsi"
> +
> +/ {
> +	model = "Qualcomm APQ8074 Dragonboard";
> +	compatible = "qcom,apq8074-dragonboard", "qcom,apq8074";
> +};
> diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi
> new file mode 100644
> index 0000000..f04b643
> --- /dev/null
> +++ b/arch/arm/boot/dts/qcom-msm8974.dtsi
> @@ -0,0 +1,35 @@
> +/dts-v1/;
> +
> +/include/ "skeleton.dtsi"
> +
> +/ {
> +	model = "Qualcomm MSM8974";
> +	compatible = "qcom,msm8974";
> +	interrupt-parent = <&intc>;
> +
> +	soc: soc { };

We should have a unit address here:

	  soc: soc@FOOBAR {

also, split out the curly braces so any future patches do have to muck with that.

	};


> +};
> +
> +&soc {
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +	ranges;
> +	compatible = "simple-bus";
> +
> +	intc: interrupt-controller@f9000000 {
> +		compatible = "qcom,msm-qgic2";
> +		interrupt-controller;
> +		#interrupt-cells = <3>;
> +		reg = <0xf9000000 0x1000>,
> +		      <0xf9002000 0x1000>;
> +	};
> +
> +	timer {
> +		compatible = "arm,armv7-timer";
> +		interrupts = <1 2 0xf08>,
> +			     <1 3 0xf08>,
> +			     <1 4 0xf08>,
> +			     <1 1 0xf08>;
> +		clock-frequency = <19200000>;
> +	};
> +};
> diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S
> index 9166e1b..9d653d4 100644
> --- a/arch/arm/include/debug/msm.S
> +++ b/arch/arm/include/debug/msm.S
> @@ -46,6 +46,11 @@
> #define MSM_DEBUG_UART_PHYS	0x16440000
> #endif
> 
> +#ifdef CONFIG_DEBUG_MSM8974_UART
> +#define MSM_DEBUG_UART_BASE	0xFA71E000
> +#define MSM_DEBUG_UART_PHYS	0xF991E000
> +#endif
> +
> 	.macro	addruart, rp, rv, tmp
> #ifdef MSM_DEBUG_UART_PHYS
> 	ldr	\rp, =MSM_DEBUG_UART_PHYS
> diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
> index 2586c28..086bcb9 100644
> --- a/arch/arm/mach-msm/Kconfig
> +++ b/arch/arm/mach-msm/Kconfig
> @@ -64,6 +64,19 @@ config ARCH_MSM_DT
> 	select SPARSE_IRQ
> 	select USE_OF
> 
> +config ARCH_MSM8974
> +	bool "MSM8974"
> +	select ARM_GIC
> +	select CPU_V7
> +	select HAVE_ARM_ARCH_TIMER
> +	select HAVE_SMP
> +	select MSM_SCM if SMP
> +	select USE_OF
> +
> +config ARCH_MSM_DT
> +	def_bool y
> +	depends on (ARCH_MSM8X60 || ARCH_MSM8960 || ARCH_MSM8974)
> +
> config MSM_HAS_DEBUG_UART_HS
> 	bool
> 
> diff --git a/arch/arm/mach-msm/board-dt.c b/arch/arm/mach-msm/board-dt.c
> index 266a280..5211e80 100644
> --- a/arch/arm/mach-msm/board-dt.c
> +++ b/arch/arm/mach-msm/board-dt.c
> @@ -26,7 +26,16 @@ static const char * const msm_dt_match[] __initconst = {
> 	NULL
> };
> 
> +static const char * const apq8074_dt_match[] __initconst = {
> +	"qcom,apq8074-dragonboard",
> +	NULL
> +};
> +
> DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
> 	.smp = smp_ops(msm_smp_ops),
> 	.dt_compat = msm_dt_match,
> MACHINE_END
> +
> +DT_MACHINE_START(APQ_DT, "Qualcomm MSM (Flattened Device Tree)")
> +	.dt_compat = apq8074_dt_match,
> +MACHINE_END
> -- 
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> hosted by The Linux Foundation
> 
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-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation