| Message ID | CAKor6TfW4reRz3m-xkCr_ZUfHQkfqT3q+S7JCpO-9F+k1QW38g@mail.gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
hi 2015-08-28 11:50 GMT+02:00 Christian Hartmann <cornogle@googlemail.com>: > > and thats what I got: > > [ 6.182903] pxa2xx-spi 80860F0E:00: bus_num = -1 > [ 6.182909] pxa2xx-spi 80860F0E:00: num_chipselect = 2 > [ 6.182928] pxa2xx-spi 80860F0E:00: IRQ 194 > [ 6.183049] pxa2xx-spi 80860F0E:00: no DMA channels available, using PIO > [ 6.183111] pxa2xx-spi 80860F0E:00: registered master spi32766 (dynamic) > [ 6.192761] spi spi-WM510205:00: 8333333 Hz actual, PIO > .... the rest of the dmesg is currently the same.... > > > Q: this thread is about the patch for the pxa2xx-spi where the > num_chipselect was raised by one to so that the slave connects here at > all. otherwise the cs1 >= max will be hit. > Do you think the bus_number is ok ? > And shouldn't it be set the cs1=0 and num_chipselect=1 ?? What is with the bus_num ? where can I find the correct one ? I have no working example, is it possible to find the right settings only via a windows installation?? cheers chris
On Tue, Sep 01, 2015 at 11:45:31AM +0200, Christian Hartmann wrote: > hi > > 2015-08-28 11:50 GMT+02:00 Christian Hartmann <cornogle@googlemail.com>: > > > > and thats what I got: > > > > [ 6.182903] pxa2xx-spi 80860F0E:00: bus_num = -1 > > [ 6.182909] pxa2xx-spi 80860F0E:00: num_chipselect = 2 > > [ 6.182928] pxa2xx-spi 80860F0E:00: IRQ 194 > > [ 6.183049] pxa2xx-spi 80860F0E:00: no DMA channels available, using PIO > > [ 6.183111] pxa2xx-spi 80860F0E:00: registered master spi32766 (dynamic) > > [ 6.192761] spi spi-WM510205:00: 8333333 Hz actual, PIO > > .... the rest of the dmesg is currently the same.... > > > > > > Q: this thread is about the patch for the pxa2xx-spi where the > > num_chipselect was raised by one to so that the slave connects here at > > all. otherwise the cs1 >= max will be hit. > > Do you think the bus_number is ok ? > > And shouldn't it be set the cs1=0 and num_chipselect=1 ?? > > What is with the bus_num ? where can I find the correct one ? > I have no working example, is it possible to find the right settings > only via a windows installation?? I am not sure the problem would be the bus number it is basically just a number allocated in the kernel, it should really matter as long as it represents the right device. Which as far as we can see here looks likely. The chip select being wrong could well be the issue, perhaps the Windows driver supports multiple chipselects where as the Linux one doesn't? Do you have access to any datasheets for the SPI on the AP? Alternatively you could try hacking it to use chip select 0 and see if that makes the system work, seems like a long shot but perhaps worth a quick go. Thanks, Charles
Hi, 2015-09-02 10:13 GMT+02:00 Charles Keepax <ckeepax@opensource.wolfsonmicro.com>: > On Tue, Sep 01, 2015 at 11:45:31AM +0200, Christian Hartmann wrote: >> hi >> >> 2015-08-28 11:50 GMT+02:00 Christian Hartmann <cornogle@googlemail.com>: >> > >> > and thats what I got: >> > >> > [ 6.182903] pxa2xx-spi 80860F0E:00: bus_num = -1 >> > [ 6.182909] pxa2xx-spi 80860F0E:00: num_chipselect = 2 >> > [ 6.182928] pxa2xx-spi 80860F0E:00: IRQ 194 >> > [ 6.183049] pxa2xx-spi 80860F0E:00: no DMA channels available, using PIO >> > [ 6.183111] pxa2xx-spi 80860F0E:00: registered master spi32766 (dynamic) >> > [ 6.192761] spi spi-WM510205:00: 8333333 Hz actual, PIO >> > .... the rest of the dmesg is currently the same.... > The chip select being wrong could well be the issue, perhaps the > Windows driver supports multiple chipselects where as the Linux > one doesn't? Do you have access to any datasheets for the SPI on > the AP? Alternatively you could try hacking it to use chip select > 0 and see if that makes the system work, seems like a long shot > but perhaps worth a quick go. > > Thanks, > Charles ok, that was a one-shot, in effect nothing changed . I did set the num_chipsselect = 1 (as in vanilla kernels, so its more a revert) and changed the cs value from 1 to 0 (as a testpatch). as soon as the SPI device WM510205:00 is allocated, it tries to add the acpi_resource and in the case of the wrong SPI chip_select with the value 1 from the DSDT ACPI table entry, but here I set it again to 0. expected : chip id register can be read, but nothing changed. the logs are the same in the end. I saw also that acpi_add_resource tries to add an irq (init with -1), but fails [ 5.966307] acpi INT33FD:00: GPIO: looking up 0 in _CRS [ 5.966806] intel_soc_pmic_i2c i2c-INT33FD:00: using lookup tables for GPIO lookup [ 5.966814] intel_soc_pmic_i2c i2c-INT33FD:00: lookup for GPIO intel_soc_pmic failed [ 5.975702] sst-acpi 80860F28:00: No matching ASoC machine driver found [ 5.986039] pxa2xx-spi 80860F0E:00: bus_num = -1 [ 5.986047] pxa2xx-spi 80860F0E:00: num_chipselect = 1 [ 5.986076] pxa2xx-spi 80860F0E:00: IRQ 194 [ 5.986368] pxa2xx-spi 80860F0E:00: no DMA channels available, using PIO [ 5.987011] pxa2xx-spi 80860F0E:00: registered master spi32766 (dynamic) [ 5.987123] spi_master spi32766: allocated SPI device for WM510205:00 [ 5.987172] spi (null): acpi_spi_add_resource : chip_select = 1 [ 5.987177] spi (null): acpi_spi_add_resource : new chip_select = 0 [ 5.987182] spi (null): acpi_spi_add_resource : irq = -1 [ 5.987186] spi (null): acpi_spi_add_resource : irq < 0, acpi_dev_resource_interrupt [ 5.987189] spi (null): acpi_spi_add_resource : irq = -1 [ 5.987193] spi (null): acpi_spi_add_resource : irq < 0, acpi_dev_resource_interrupt [ 5.987197] spi (null): acpi_spi_add_resource : irq = -1 [ 5.987201] spi (null): acpi_spi_add_resource : irq < 0, acpi_dev_resource_interrupt [ 5.987204] spi (null): acpi_spi_add_resource : irq = -1 [ 5.987208] spi (null): acpi_spi_add_resource : irq < 0, acpi_dev_resource_interrupt [ 5.987212] spi (null): acpi_spi_add_resource : irq = -1 [ 5.987217] pxa2xx-spi 80860F0E:00: cs0 < max 1 [ 5.987243] spi spi-WM510205:00: 8333333 Hz actual, PIO [ 5.987249] spi spi-WM510205:00: setup mode 0, 8 bits/w, 8000000 Hz max --> 0 [ 5.991261] spi spi-WM510205:00: checking WM510205 with bmp180 [ 5.991271] spi spi-WM510205:00: checking WM510205 with bmp181 [ 5.991276] spi spi-WM510205:00: modalias WM510205 in id_table not found, returns NULL [ 5.991310] arizona spi-WM510205:00: arizona_acpi_get_type(), than via spi_get_device_id(). [ 5.991316] arizona spi-WM510205:00: arizona_acpi_get_type matched [ 5.991323] acpi WM510205:00: GPIO: looking up 0 in _CRS [ 5.991401] arizona spi-WM510205:00: using 1 as type for arizona audio codec [ 5.991406] arizona spi-WM510205:00: regmap set to wm5102_spi [ 5.991980] arizona spi-WM510205:00: acpi_dev_add_driver_gpios arizona_acpi_gpios added done, 0 [ 5.991986] arizona spi-WM510205:00: spi_irq = 146 [ 5.991990] arizona spi-WM510205:00: arizona_spi_probe done, calling arizona_dev_init [ 5.991994] arizona spi-WM510205:00: dev_set_drvdata done for 1 [ 5.991999] arizona spi-WM510205:00: arizona_of_get_core_pdata for 1 [ 5.992004] arizona spi-WM510205:00: regcache_cache_only for 1 set [ 5.992008] arizona spi-WM510205:00: added wm5102_core_supplies for 1 [ 5.994493] arizona spi-WM510205:00: mfd_add_devices done for 1 [ 5.994505] spi-WM510205:00 supply AVDD not found, using dummy regulator [ 5.994553] spi-WM510205:00 supply DBVDD1 not found, using dummy regulator [ 6.007337] arizona spi-WM510205:00: devm_regulator_bulk_get done for 1 [ 6.007348] LDO1: supplied by regulator-dummy [ 6.007419] arizona spi-WM510205:00: regulator_get done for 1 [ 6.007427] acpi WM510205:00: GPIO: looking up 0 in _CRS [ 6.007517] arizona spi-WM510205:00: (ACPI) using irq_gpio GPIO = 146 [ 6.007534] arizona spi-WM510205:00: devm_gpio_request_one done for request reset: 0 [ 6.007541] arizona spi-WM510205:00: regulator_bulk_enable done, enable core supplies: 0 [ 6.010032] arizona spi-WM510205:00: regulator_enable done, enable DCVDD: 0 [ 6.017864] arizona spi-WM510205:00: arizona_disabe_reset [ 6.017875] arizona spi-WM510205:00: regcache_cache_only [ 6.019067] arizona spi-WM510205:00: regmap_read : read ID register, return value: 0 [ 6.019077] arizona spi-WM510205:00: found device ID: ffff I asked to get more technical docs / datasheets from lenovo , but I do not think, that I will get them. Has anybody directions and hints / some tools known to get started with win8.1 to get such hardware details extracted? I mean, it must work under windows, why to not look there and write down / dump whats needed. Any hints or suggestions for me ?
On Fri, Sep 04, 2015 at 03:32:03PM +0200, Christian Hartmann wrote: > Hi, > > > 2015-09-02 10:13 GMT+02:00 Charles Keepax <ckeepax@opensource.wolfsonmicro.com>: > > On Tue, Sep 01, 2015 at 11:45:31AM +0200, Christian Hartmann wrote: > >> hi > >> > >> 2015-08-28 11:50 GMT+02:00 Christian Hartmann <cornogle@googlemail.com>: > >> > > > The chip select being wrong could well be the issue, perhaps the > > Windows driver supports multiple chipselects where as the Linux > > one doesn't? Do you have access to any datasheets for the SPI on > > the AP? Alternatively you could try hacking it to use chip select > > 0 and see if that makes the system work, seems like a long shot > > but perhaps worth a quick go. > > > > Thanks, > > Charles > > ok, that was a one-shot, in effect nothing changed . > I did set the num_chipsselect = 1 (as in vanilla kernels, so its more > a revert) and > changed the cs value from 1 to 0 (as a testpatch). > as soon as the SPI device WM510205:00 is allocated, > it tries to add the acpi_resource and in the case of the wrong SPI > chip_select with the value 1 from the DSDT ACPI table entry, but here > I set it again to 0. > > expected : chip id register can be read, but > nothing changed. the logs are the same in the end. > I saw also that acpi_add_resource tries to add an irq (init with -1), but fails Not entirely unexpected I guess, but certainly my gut feel here is that this is a problem with the chip selects. I guess really trying to find any available documentation on the AP/SPI and tearing apart the SPI driver are the next steps from here. But afraid I don't really have any great ideas for diving much deeper. I will try to chase the Windows guys here again and see if I can gain any clues from them but I don't really know at what level these things are abstracted in Windows and thus if they can really help us much. Thanks, Charles
Hello, 2015-09-04 16:34 GMT+02:00 Charles Keepax <ckeepax@opensource.wolfsonmicro.com>: > Not entirely unexpected I guess, but certainly my gut feel here > is that this is a problem with the chip selects. I guess really > trying to find any available documentation on the AP/SPI and what do you mean with AP ? I have googled and found some technical datasheets and developer documentation about the marvell pxa27 under this link/webpage http://www.marvell.com/application-processors/pxa-family/ I also asked lenovo about datasheets (not the short brief productsheet) to get facts about it. But again, I do not think that lenovo will ever support me in this case. if I got some datasheets and if its not against laws etc I will report it here. > tearing apart the SPI driver are the next steps from here. But > afraid I don't really have any great ideas for diving much > deeper. I will try to chase the Windows guys here again and see That would be nice, hope they got some glues. > if I can gain any clues from them but I don't really know at what > level these things are abstracted in Windows and thus if they can > really help us much. > > Thanks, > Charles Thanks, Chris
On Mon, Sep 07, 2015 at 09:58:22AM +0200, Christian Hartmann wrote: > Hello, > > 2015-09-04 16:34 GMT+02:00 Charles Keepax <ckeepax@opensource.wolfsonmicro.com>: > > Not entirely unexpected I guess, but certainly my gut feel here > > is that this is a problem with the chip selects. I guess really > > trying to find any available documentation on the AP/SPI and > what do you mean with AP ? > > I have googled and found some technical datasheets and > developer documentation about the marvell pxa27 under this link/webpage > http://www.marvell.com/application-processors/pxa-family/ > > I also asked lenovo about datasheets (not the short brief productsheet) to get > facts about it. But again, I do not think that lenovo will ever > support me in this case. > if I got some datasheets and if its not against laws etc I will report it here. > > > tearing apart the SPI driver are the next steps from here. But > > afraid I don't really have any great ideas for diving much > > deeper. I will try to chase the Windows guys here again and see > That would be nice, hope they got some glues. > > > if I can gain any clues from them but I don't really know at what > > level these things are abstracted in Windows and thus if they can > > really help us much. Ok no major hints from them, they do have a 10 inch version of the same tablet lying around though so I will get them to post that up and have a look see if I can figure anything out. If you had anywhere I can pull in what you have done already that would be handy. Thanks, Charles
Hi, > Ok no major hints from them, they do have a 10 inch version of > the same tablet lying around though so I will get them to post > that up and have a look see if I can figure anything out. > nice to hear, I am stuck at reading the chip registers ID value correctly at the moment. > If you had anywhere I can pull in what you have done already that > would be handy. I have no such public or secure repo setup yet, time to do that. in that case with the wm510205 branched from torvalds/master, what do you prefer or is it okay, if I make an repo on github for it ?? Another options are available too, I can also make them as a patch series (in email format) and send them to this group or to you. Let me know whats the best way for all of us cheers chris
On Tue, Sep 29, 2015 at 09:48:45AM +0200, Christian Hartmann wrote: > Hi, > > > > Ok no major hints from them, they do have a 10 inch version of > > the same tablet lying around though so I will get them to post > > that up and have a look see if I can figure anything out. > > > nice to hear, I am stuck at reading the chip registers ID value > correctly at the moment. > > > If you had anywhere I can pull in what you have done already that > > would be handy. > I have no such public or secure repo setup yet, time to do that. > in that case with the wm510205 branched from torvalds/master, what do > you prefer or > is it okay, if I make an repo on github for it ?? Yeah branched of Linus's tree is probably best and shoving it on github works for me. Thanks, Charles
> Yeah branched of Linus's tree is probably best and shoving it on > github works for me. > > Thanks, > Charles wow, I had already a github account for some years, but not used it yet. I just forked torvalds/linux now and I have to re-apply my patches into the github workflow. Anyway, I give you the url, where you can find the patches I made. I will update the repository today. I actually clone the linux repo. In the next steps I create a yoga851f branch , will apply the patches and will push them soon back to github. The URL will be: https://github.com/cornbob/linux Overview under: https://github.com/cornbob cheers chris
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 6d795a5..cf02094 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1389,6 +1389,9 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->unprepare_transfer_hardware = pxa2xx_spi_unprepare_transfer; master->auto_runtime_pm = true; + dev_info(&pdev->dev, "bus_num = %d\n",master->bus_num); + dev_info(&pdev->dev, "num_chipselect = %d\n",master->num_chipselect); + drv_data->ssp_type = ssp->type; drv_data->null_dma_buf = (u32 *)PTR_ALIGN(&drv_data[1], DMA_ALIGNMENT); @@ -1423,6 +1426,8 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) } + dev_info(&pdev->dev, "IRQ %d\n", ssp->irq); + /* Setup DMA if requested */ drv_data->tx_channel = -1; drv_data->rx_channel = -1;