System memory map for i2c device for t4240 and t1021

[amittomar]

Could anyone please point me out to i2c bus Memory map for t4240rdb and t1021 rdb soc's.

I looked into the SDK1.6 ref manuals but could not find it,So can anyone point me out exact Memory map address for I2C BUS for t4240rdb and t1021?

Thanks,

Amit.

[scottwood]

Assuming you mean that you want to know which i2c devices are at which i2c addresses (this isn't a "memory map" as it's not mapped to memory), you should be able to find that information in the reference manual for the board (not the SoC, and not the SDK).

[amittomar]

I didn't mean that I want to know which i2c devices sits on which i2c address.

static void stellaris_i2c_init(uint32_t base, qemu_irq irq, i2c_bus *bus)

What I would like to know base address for i2c for t4240 and t1021 board which should be mapped in CPU address space.

Thanks,

Amit.

[scottwood]

What does stellaris have to do with t4240/t1021?

[amittomar]

I simply wanted to know the I2C controller base address for t4240/t1021 ,thought using stellaris machine model as example would have put this question in better way.

Should have asked this question appropriately at first place,sorry for creating the confusion.

[yipingwang]

Hello Amit,

Please check whether the address defined in t4240qds.dts is what you need, i2c base address is 0xffe118000.

  soc: soc@ffe000000 {

                ranges = <0x00000000 0xf 0xfe000000 0x1000000>;

                reg = <0xf 0xfe000000 0 0x00001000>;

                spi@110000 {

                        flash@0 {

                                #address-cells = <1>;

                                #size-cells = <1>;

                                compatible = "sst,sst25wf040";

                                reg = <0>;

                                spi-max-frequency = <40000000>; /* input clock */

                        };

                };

                i2c@118000 {

                        pca9547@77 {

                                compatible = "philips,pca9547";

                                reg = <0x77>;

                                #address-cells = <1>;

                                #size-cells = <0>;

                                i2c@2 {

                                        #address-cells = <1>;

                                        #size-cells = <0>;

                                        reg = <0x2>;

                                        ina220@40 {

                                                compatible = "ti,ina220";

                                                reg = <0x40>;

                                                shunt-resistor = <1000>;

                                        };

Have a great day,
Yiping

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[amittomar]

ahhh, didn't realize that I could find it in DTS file of respected board :smileyhappy:

Thanks Yiping.

[vinaykumarmasan · Accepted solution]

Hello Amit,

Just to add to Yiping's response, please refer below sections for I2C Memory Map info in T4240RM:

     

Table 2-104. CCSR Block Base Address Map

 

14.4 I2C Controller Memory Map

hope this helps.

Regards,

Vinaykumar

[amittomar]

Thanks @Vinay for your response on this.This is excatly what I'm looking for.

Also,as Yiping pointed out we can have go for dts look up to fins the same.