video: fbdev: Set pixclock = 0 in goldfishfb

[ Upstream commit ace6033ec5c356615eaa3582fb1946e9eaff6662 ]

User space Android code identifies pixclock == 0 as a sign for emulation
and will set the frame rate to 60 fps when reading this value, which is
the desired outcome.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/video/fbdev/goldfishfb.c b/drivers/video/fbdev/goldfishfb.c
index 14a93cb213100a5062c60ce94ef9a976fff1d3e4..66d58e93bc322648ac8dd46cef13515417e1d06b 100644 (file)
--- a/drivers/video/fbdev/goldfishfb.c
+++ b/drivers/video/fbdev/goldfishfb.c
@@ -234,7 +234,7 @@ static int goldfish_fb_probe(struct platform_device *pdev)
        fb->fb.var.activate     = FB_ACTIVATE_NOW;
        fb->fb.var.height       = readl(fb->reg_base + FB_GET_PHYS_HEIGHT);
        fb->fb.var.width        = readl(fb->reg_base + FB_GET_PHYS_WIDTH);
-       fb->fb.var.pixclock     = 10000;
+       fb->fb.var.pixclock     = 0;
 
        fb->fb.var.red.offset = 11;
        fb->fb.var.red.length = 5;