Hi,
Can anyone help me in finding base address of i2c driver "intel_qrk_gip". I am using galileo gen2 target platform ?
Link Copied
Hello vamkri,
You can find that information in section 19.5 of the http://www.intel.com/content/www/us/en/support/processors/embedded-processors/000006941.html?wapkw=s... Intel® Quark™ SoC X1000 datasheet. Let us know if that information helps you.
Peter.
Hi Peter,
I have seen Offset start, offset end and registers default value. But there is no base address given. Can you let me know ...
Thanks,
Vamsi
Let me investigate about this and I'll get back to you as soon as possible.
Peter.
Hi,
using lspci -vvv:
00:15.2 Serial bus controller [0c80]: Intel Corporation Device 0934 (rev 10)
Subsystem: Intel Corporation Device 0934
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-
Latency: 0
Interrupt: pin C routed to IRQ 36
Region 0: Memory at 90107000 (32-bit, non-prefetchable) [size=4K]
Region 1: Memory at 90106000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable+ 64bit-
Address: fee0100c Data: 4142
Masking: 00000000 Pending: 00000000
Kernel driver in use: intel_qrk_gip
Kernel modules: intel_qrk_gip
and using dmesg | grep qrk:
root@quark:~# dmesg | grep qrk
[ 12.345633] intel_qrk_gip 0000:00:15.2: enabling device (0000 -> 0002)
[ 12.426587] platform qrk-gpio-restrict-sc.0: Driver qrk-gpio-restrict-sc requests probe deferral
[ 12.532884] intel_qrk_gpio_probe UIO addr 0x90106000 internal_addr 0xd06ee000 size 4096 memtype 1
[ 12.543147] intel_qrk_gip 0000:00:15.2: i2c speed set to 100kHz
[ 12.703588] intel_qrk_gip 0000:00:15.2: enabling bus mastering
[ 12.704264] platform qrk-gpio-restrict-sc.0: Driver qrk-gpio-restrict-sc requests probe deferral
[ 13.052516] platform qrk-gpio-restrict-sc.0: Driver qrk-gpio-restrict-sc requests probe deferral
it is possible to identify I2C BAR = 0x90107000
BR,
xbolshe
Hello vamkri,
The Galileo's I2C MM registers are located at the base address defined by BAR0 (Base Address Register 0) of PCI device 21, function 2. It can be found in table 105 of the http://www.intel.com/content/www/us/en/support/processors/embedded-processors/000006941.html?wapkw=s... X1000 Datasheet for Processors.
Peter.
For more complete information about compiler optimizations, see our Optimization Notice.