From: Alex Deucher alexander.deucher@amd.com

Those chips have crt2_ddc bus.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=39672

Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@kernel.org --- drivers/gpu/drm/radeon/radeon_combios.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index e459467..a74217c 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -779,7 +779,8 @@ void radeon_combios_i2c_init(struct radeon_device *rdev) } } } - } else if (rdev->family >= CHIP_R200) { + } else if ((rdev->family == CHIP_R200) || + (rdev->family >= CHIP_R300)) { /* 0x68 */ i2c = combios_setup_i2c_bus(rdev, DDC_MONID, 0, 0); rdev->i2c_bus[3] = radeon_i2c_create(dev, &i2c, "MONID");