On 22/11/2022 16:07, Greg KH wrote:
On Fri, Nov 18, 2022 at 03:40:05PM +0000, Jon Hunter wrote:
From: Sing-Han Chen <singhanc@xxxxxxxxxx>
This change adds Tegra234 XUSB host mode controller support.
In Tegra234, some of the registers have moved to bar2 space.
The new soc variable has_bar2 indicates the chip with bar2
area. This patch adds new reg helper to let the driver reuse
the same code for those chips with bar2 support.
Signed-off-by: Sing-Han Chen <singhanc@xxxxxxxxxx>
Co-developed-by: Wayne Chang <waynec@xxxxxxxxxx>
Signed-off-by: Wayne Chang <waynec@xxxxxxxxxx>
Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
This is should be much slower with the additional redirection. Is it
noticable on this hardware platform with, and without this change? Or
is the hardware slow enough that it doesn't even show up as a speed
decrease?
Wayne, do we have any inputs on this?
I know that we have been using this implementation now for some time on
the kernels we ship and that would be tested on Tegra210, Tegar186,
Tegra194 and Tegra234. So I assume that the performance there is good,
but not sure about Tegra124.
Jon
--
nvpublic
