[S] Change in coreboot[master]: mb/lenovo/x200/blc: Add LTN121AT07-L02 at 750Hz

[Arthur Heymans (Code Review)]

Arthur Heymans has submitted this change. ( https://review.coreboot.org/c/coreboot/+/74182 )

Change subject: mb/lenovo/x200/blc: Add LTN121AT07-L02 at 750Hz
......................................................................

mb/lenovo/x200/blc: Add LTN121AT07-L02 at 750Hz

Its EDID string is "LTN121AT07L02". The vendor sets BLC_PWM_CTL to
0x31313131.

This frequency seems working well on the x200 with this panel, which
is said to be LED.

Change-Id: I8b0ec04c6f6fcb6d4027a5114698db87d7718191
Signed-off-by: Bill XIE 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74182
Reviewed-by: Paul Menzel 
Tested-by: build bot (Jenkins) 
Reviewed-by: Arthur Heymans 
---
M src/mainboard/lenovo/x200/blc.c
1 file changed, 21 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Paul Menzel: Looks good to me, but someone else must approve
  Arthur Heymans: Looks good to me, approved

diff --git a/src/mainboard/lenovo/x200/blc.c b/src/mainboard/lenovo/x200/blc.c
index c03b3e9..330f1bc 100644
--- a/src/mainboard/lenovo/x200/blc.c
+++ b/src/mainboard/lenovo/x200/blc.c
@@ -18,6 +18,7 @@
    {"B121EW09 V3 ", 400},
    {"HV121WX4-120", 110}, /* Aftermarket AFFS lcd, works well at low pwm */
    {"LTN121AT03001", 110},
+	{"LTN121AT07L02", 750}, /* Its part name is LTN121AT07-L02 */
    {"LTN121AP03001", 750},
    /* TODO: untested panels found on thinkwiki */
    /* Generally CCFL runs best at lower PWM */