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Message-ID: <000001d96855$55648460$002d8d20$@trustnetic.com> Date: Thu, 6 Apr 2023 14:59:29 +0800 From: Jiawen Wu <jiawenwu@...stnetic.com> To: "'Andrew Lunn'" <andrew@...n.ch> Cc: <netdev@...r.kernel.org>, <linux@...linux.org.uk>, <mengyuanlou@...-swift.com> Subject: RE: [PATCH net-next 2/6] net: txgbe: Implement I2C bus master driver > > > Is the I2C bus master your own IP, or have you licensed a core? > > > Or using the open cores i2C bus master? I just want to make sure > > > there is not already a linux driver for this. > > > > > > > I use the I2C core driver, and implement my own i2c_algorithm. > > I think it needs to configure my registers to realize the function. > > I had a quick look, and it appears the hardware is not an open-cores > derived I2C bus master. > > As i tried to say, sometimes you just license an I2C bus master, > rather than develop one from scratch. And if it was a licensed IP > core, there is likely to be an existing driver. > By consulting with hardware designers, our I2C licensed the IP of Synopsys. But I can't use the I2C_DESIGNWARE_CORE directly, because IRQ is not supported in our I2C.
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