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Before setting: mipi_lcd_device.reverse_panel = 1, the Trats's LCD panel was flipped by 180 degrees. The flip was caused by following change: Exynos: Change get_timer() to work correctly SHA1: 3d00c0cb96ff93a929700b80d89cb905e5ab5315 This commit fixed udelay(), which is necessary (due to HW LCD controller oddity) for mipi-dsi correct operation. As a result the display orientation has been switched. As a follow up, the hwrevision() function has been removed, since it was used only in this particular place. Test HW: Trats Exynos4210 rev 0. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Minkyu Kang <mk7.kang@samsung.com>