Timur Kristóf 1050747846 drm/amd/display: Fix fractional fb divider in set_pixel_clock_v3 ... For later VBIOS versions, the fractional feedback divider is calculated as the remainder of dividing the feedback divider by a factor, which is set to 1000000. For reference, see: - calculate_fb_and_fractional_fb_divider - calc_pll_max_vco_construct However, in case of old VBIOS versions that have set_pixel_clock_v3, they only have 1 byte available for the fractional feedback divider, and it's expected to be set to the remainder from dividing the feedback divider by 10. For reference see the legacy display code: - amdgpu_pll_compute - amdgpu_atombios_crtc_program_pll This commit fixes set_pixel_clock_v3 by dividing the fractional feedback divider passed to the function by 100000. Fixes: 4562236b3b ("drm/amd/dc: Add dc display driver (v2)") Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Rodrigo Siqueira <siqueira@igalia.com> Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 027e7acc7e17802ebf28e1edb88a404836ad50d6) Cc: stable@vger.kernel.org		2025-08-18 18:00:34 -04:00
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dce60	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
dce80	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
dce110	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
dce112	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
bios_parser2.c	drm/amd/display/dc: add support for oem i2c in atom_firmware_info_v3_1	2025-02-12 21:02:54 -05:00
bios_parser2.h
bios_parser_common.c	drm/amd/display: Add support for USBC connector	2022-03-31 23:05:53 -04:00
bios_parser_common.h
bios_parser_helper.c	drm/amd/display: Remove unused function bios_get_vga_enabled_displays	2024-09-26 17:06:17 -04:00
bios_parser_helper.h	drm/amd/display: Remove unused function bios_get_vga_enabled_displays	2024-09-26 17:06:17 -04:00
bios_parser_interface.c
bios_parser_types_internal2.h	drm/amd/display: Add dependant changes for DCN32/321	2022-06-03 16:43:38 -04:00
bios_parser_types_internal.h
bios_parser.c	drm/amd/display: Don't print errors for nonexistent connectors	2025-08-18 18:00:20 -04:00
bios_parser.h
command_table2.c	drm/amd/display: Add option to disable PHY SSC reduction on transmitter enable	2025-06-18 12:19:16 -04:00
command_table2.h	drm/amd/display: Pass pwrseq inst for backlight and ABM	2023-12-06 15:22:33 -05:00
command_table_helper2.c	drm/amd/display: fix dcn4x init failed	2025-02-25 11:45:11 -05:00
command_table_helper2.h
command_table_helper_struct.h
command_table_helper.c	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
command_table_helper.h	drm/amd/display/dc: Refactor remove duplications	2025-02-27 15:52:32 -05:00
command_table.c	drm/amd/display: Fix fractional fb divider in set_pixel_clock_v3	2025-08-18 18:00:34 -04:00
command_table.h
Makefile