Thread (19 messages) flat view 19 messages, 4 authors, 2007-10-24

RE: [microblaze-uclinux] Re: [microblaze-uclinux] RE: [PATCH v3] Device tree bindings for Xilinx devices

From: Michal Simek <hidden>
Date: 2007-10-23 04:07:59

quoted
In my opinion will be better generate only parameters which 
you want not all.
That smells with unusable parameters.
In the long term, this may be true.  In the short term:
1) dtb size is not the key problem
Yes of course
2) making sure that everything works is a key problem.
3) The code that generates the dts should be as simple as possible,
so that we can easily document what it does.
Yes but you must document every parameter which your generate do. The better way is 
document only parameters which you want use.
In the long term, I'm all for optimizing the device tree that gets
built,
assuming that it appears to be a problem in real systems.
We can optimize now. I made new version of my generator  u-boot_v3_00_a (monstr.eu)
where you can simply add parameter which you want to use. 

If you want use any parameter add it. 
For microblaze cpu - line 1184. 
And for others peripherals lines 926-980. (The last parameter of function call).

Which parameters do you want for PPC405, Grant?

Regards,
Michal Simek

This is example of generator.

/ {
	model = "mONStR";
	chosen {
		linux,platform = <600>;
		bootargs = "root=/dev/xsysace/disc0/part2";
	} ;
	cpus {
		#size-cells = <0>;
		#cpus = < 0 >;
		#address-cells = <1>;
		microblaze_0,5.00.c {
			32-bit;
			linux,boot-cpu;
			device_type = "cpu";
			reg = <0>;
			clock-frequency = <5f5e1000>;
			timebase-frequency = <1FCA055>;
			i-cache-line-size = <2000>;
			i-cache-size = <10>;
			d-cache-line-size = <2000>;
			d-cache-size = <10>;
			xilinx,pvr = <0>;
			xilinx,debug-enabled = <1>;
			xilinx,fsl-links = <0>;
		} ;
	} ;

	opb_mdm@41400000 {
		compatible = "opb_mdm_2.00.a\0opb_mdm";
		name = "debug_module";
		reg = < 41400000 10000 >;
		device_type = "opb_mdm";
		xilinx,mb-dbg-ports = <1>;
		xilinx,uart-width = <8>;
		xilinx,use-uart = <1>;
	} ;
	opb_uartlite@40600000 {
		compatible = "opb_uartlite_1.00.b\0opb_uartlite";
		name = "RS232_Uart_1";
		interrupts = < 4 0 >;
		reg = < 40600000 10000 >;
		device_type = "opb_uartlite";
		xilinx,baudrate = <2580>;
		xilinx,data-bits = <8>;
		xilinx,clk-freq = <5f5e100>;
		xilinx,odd-parity = <0>;
		xilinx,use-parity = <0>;
	} ;
	opb_ethernet@40c00000 {
		compatible = "opb_ethernet_1.04.a\0opb_ethernet";
		name = "Ethernet_MAC";
		interrupts = < 3 0 >;
		reg = < 40c00000 10000 >;
		device_type = "opb_ethernet";
		xilinx,cam-exist = <0>;
		xilinx,dev-blk-id = <1>;
		xilinx,dev-mir-enable = <1>;
		xilinx,dma-present = <1>;
		xilinx,include-dev-pencoder = <1>;
		xilinx,ipif-rdfifo-depth = <8000>;
		xilinx,ipif-wrfifo-depth = <8000>;
		xilinx,mii-exist = <1>;
	} ;
	opb_sysace@41820000 {
		compatible = "opb_sysace_1.00.c\0opb_sysace";
		name = "SysACE_CompactFlash";
		reg = < 41820000 10000 >;
		device_type = "opb_sysace";
		xilinx,mem-width = <10>;
	} ;
	opb_gpio@40000000 {
		compatible = "opb_gpio_3.01.b\0opb_gpio";
		name = "LEDs_4Bit";
		reg = < 40000000 10000 >;
		device_type = "opb_gpio";
		xilinx,gpio-width = <4>;
		xilinx,is-dual = <0>;
	} ;
	memory@30000000 {
		edk_name = "DDR_256MB_32MX64_rank1_row13_col10_cl2_5";
		compatible = "opb_ddr";
		memreg:reg = < 30000000 10000000 >;
		device_type = "memory";
	} ;
	opb_ps2_dual_ref@7a400000 {
		compatible = "opb_ps2_dual_ref_1.00.a\0opb_ps2_dual_ref";
		name = "PS2_Ports";
		interrupts = < 2 0 >;
		interrupts = < 1 0 >;
		reg = < 7a400000 10000 >;
		device_type = "opb_ps2_dual_ref";
	} ;
	opb_timer@41c00000 {
		compatible = "opb_timer_1.00.b\0opb_timer";
		name = "opb_timer_1";
		interrupts = < 0 0 >;
		reg = < 41c00000 10000 >;
		device_type = "opb_timer";
		xilinx,count-width = <20>;
		xilinx,one-timer-only = <0>;
	} ;
	opb_intc@41200000 {
		compatible = "opb_intc_1.00.c\0opb_intc";
		name = "opb_intc_0";
		reg = < 41200000 10000 >;
		device_type = "opb_intc";
	} ;
	opb_uart16550@40400000 {
		compatible = "opb_uart16550_1.00.d\0opb_uart16550";
		name = "opb_uart16550_0";
		reg = < 40400000 10000 >;
		device_type = "opb_uart16550";
	} ;
	opb_sysace@41800000 {
		compatible = "opb_sysace_1.00.c\0opb_sysace";
		name = "opb_sysace_0";
		reg = < 41800000 10000 >;
		device_type = "opb_sysace";
		xilinx,mem-width = <10>;
	} ;
} ;
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