Subject: Re: Oxford Semiconductor's OXCB950 in 8250_pci.c -
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Fw: Re: Oxford Semiconductor's OXCB950 in 8250_pci.c

Hope it is ok forwarding the message as my reply to it seems to be lost somewhere... Begin forwarded message: Date: Wed, 10 May 2006 20:20:49 +0100 From: Russell King <rmk@xxxxxxxxxxxxxxxx> To: Mikhail Kolesnik <mike@xxxxxxxxxxxxxx> Subject: Re: Oxford Semiconductor's OXCB950 in 8250_pci.c On Wed, May 10, 2006 at 09:10:13PM +0300, Mikhail Kolesnik wrote: > On Wed, 10 May 2006 17:36:32 +0100 > Russell King <rmk@xxxxxxxxxxxxxxxx> wrote: > > > On Sun, May 07, 2006 at 10:59:42PM +0300, Mikhail Kolesnik wrote: > > > ... > > > + { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_CB950, > > > + PCI_ANY_ID, PCI_ANY_ID, 0, 0, > > > + pbn_b0_bt_1_115200 }, > > > > This should probably be pbn_b0_1_115200? > > The reason was (from the discussion mentioned): > > pbn_b0_bt_1_115200 has been used instead > > of pbn_b0_1_115200, because the latter is identical to > > pbn_default, and the effect should be the same since > > OXCB950 is single-port. > > Seems it is not the problem here (as card partially works). Or should I > try changing it? The reason given there is no longer valid, and is just a preference. > > > The problem is that card only works with baud rates from 50 to 2400. > > > The card is connected to a common external modem, which is known to > > > work with any reasonable rates in other PC. > > > > Odd. Maybe the port isn't clocked at the usual frequency, and 115200 > > is the wrong base. > > Is that datasheet of any use here? No - such devices can be used with multiple differing crystals, and the data sheet allows the device to be used with crystals up to 60MHz! > > Well, 1.8432MHz corresponds with a base of 115200, so that's not wrong. > > IS your modem showing the DTE speed in that connect line? If so, 2400 > > baud seems to actually correspond with 230400 baud, which would be a > > rather interesting state of affairs. What does setserial -bav /dev/ttyS4 > > say? > > Yes, the first number is 'DTE data rate' (but modem's chip datasheet > claims it does not support DTE higher than 115200). Note, with ANY > baud from 300 to 2400 result is: > "CONNECT 230400/Vxx/LAPM/Vxxx/TX=xxxxx/RX=xxxxx" > But bauds lower than 1200 do really limit speed. > > # setserial -bav /dev/ttyS4 > /dev/ttyS4, Line 4, UART: 16950/954, Port: 0x3010, IRQ: 11 > Baud_base: 115200, close_delay: 50, divisor: 0 > closing_wait: 3000 > Flags: spd_normal skip_test > > Changing divisor to 8.625 (it is reported to be '8') gave nothing. The "divisor" doesn't do anything in this mode. What happens if you: 1. setserial /dev/ttyS4 spd_cust divisor 104 2. set the baud rate to 38400 baud If what I think has happened is correct, 104 should approximate 9600 baud, 52 should approximate 19200 baud, 26 should be 38400 baud, and 17 should approximate 57600 baud. It would be helpful if you could confirm that the modem does report the real DTE data rate under Windows. I hope that each time you test this it doesn't cost. 8/ -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html

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Fw: Re: Oxford Semiconductor's OXCB950 in 8250_pci.c

Hope it is ok forwarding the message as my reply to it seems to be lost somewhere... Begin forwarded message: Date: Wed, 10 May 2006 20:20:49 +0100 From: Russell King <rmk@xxxxxxxxxxxxxxxx> To: Mikhail Kolesnik <mike@xxxxxxxxxxxxxx> Subject: Re: Oxford Semiconductor's OXCB950 in 8250_pci.c On Wed, May 10, 2006 at 09:10:13PM +0300, Mikhail Kolesnik wrote: > On Wed, 10 May 2006 17:36:32 +0100 > Russell King <rmk@xxxxxxxxxxxxxxxx> wrote: > > > On Sun, May 07, 2006 at 10:59:42PM +0300, Mikhail Kolesnik wrote: > > > ... > > > + { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_CB950, > > > + PCI_ANY_ID, PCI_ANY_ID, 0, 0, > > > + pbn_b0_bt_1_115200 }, > > > > This should probably be pbn_b0_1_115200? > > The reason was (from the discussion mentioned): > > pbn_b0_bt_1_115200 has been used instead > > of pbn_b0_1_115200, because the latter is identical to > > pbn_default, and the effect should be the same since > > OXCB950 is single-port. > > Seems it is not the problem here (as card partially works). Or should I > try changing it? The reason given there is no longer valid, and is just a preference. > > > The problem is that card only works with baud rates from 50 to 2400. > > > The card is connected to a common external modem, which is known to > > > work with any reasonable rates in other PC. > > > > Odd. Maybe the port isn't clocked at the usual frequency, and 115200 > > is the wrong base. > > Is that datasheet of any use here? No - such devices can be used with multiple differing crystals, and the data sheet allows the device to be used with crystals up to 60MHz! > > Well, 1.8432MHz corresponds with a base of 115200, so that's not wrong. > > IS your modem showing the DTE speed in that connect line? If so, 2400 > > baud seems to actually correspond with 230400 baud, which would be a > > rather interesting state of affairs. What does setserial -bav /dev/ttyS4 > > say? > > Yes, the first number is 'DTE data rate' (but modem's chip datasheet > claims it does not support DTE higher than 115200). Note, with ANY > baud from 300 to 2400 result is: > "CONNECT 230400/Vxx/LAPM/Vxxx/TX=xxxxx/RX=xxxxx" > But bauds lower than 1200 do really limit speed. > > # setserial -bav /dev/ttyS4 > /dev/ttyS4, Line 4, UART: 16950/954, Port: 0x3010, IRQ: 11 > Baud_base: 115200, close_delay: 50, divisor: 0 > closing_wait: 3000 > Flags: spd_normal skip_test > > Changing divisor to 8.625 (it is reported to be '8') gave nothing. The "divisor" doesn't do anything in this mode. What happens if you: 1. setserial /dev/ttyS4 spd_cust divisor 104 2. set the baud rate to 38400 baud If what I think has happened is correct, 104 should approximate 9600 baud, 52 should approximate 19200 baud, 26 should be 38400 baud, and 17 should approximate 57600 baud. It would be helpful if you could confirm that the modem does report the real DTE data rate under Windows. I hope that each time you test this it doesn't cost. 8/ -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html

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KYDEI ENTERPRISE (H.K) CO.LTD.

KYDEI ENTERPRISE (H.K) CO.LTD. 29-32/F., 30 Queen?s Road Central, Hong Kong, HONG KONG. Dear Sir/Madam, We the management, members and staff of Kydei Enterprise (H.K)co. ltd, will be very glad if you can represent us in your country as a medium of receiving payments for goods supplied to our customers in North America. We deal in Chinese art and interior design and the global need for our goods has given rise to a significant increase in our customer base world wide. Commission for your services is subject to negotiation upon acceptance of our proposal. In anticipation of your acceptance of our proposal, I am taking the liberty of explaining in detail the requirements and need for your services. I am an exporter based in Hong Kong who exports Chinese art and interior design. Due to the growing trend for the need for Chinese arts and interior design in North America and the world in general, there has been an upsurge in my customer base and the need for me to expand my business to meet up with the new responsibility at hand. I assume you understand the need for every business to grow and expand to increase profit. As a result of this development, I have had the need to extend my customer base to North America. However, it is only logical that changes are put in place to meet up with the demands of a speedy intercontinental monetary transaction as time is always a factor in effective business management. To give you a better understanding of what your responsibilities will be as my private payment agent, it is important that you understand some difficulties that I am faced with pr esently in receiving funds from clients in North America. Firstly, most payments for goods are drawn in checks and it takes approximately two-four weeks for checks from other continents to clear with our local banks. These delays mostly result in our late response to orders and we sometimes loose clients to other suppliers. Secondly, we experience high tariffs and foreign exchange charges as funds will have to be converted by our banks to local currencies as they are cleared with our banks and re converted to foreign currency as we place orders for supplies from our international suppliers. As you can see, the back and forth process of currency conversion, results to high charges for foreign exchange thereby resulting to increase in cost of doing business. But with your assistance, funds that are to be used for supplies will be sent directly by you to my supplies there by avoiding the intercontinental banking processing time between Asia and North America.