From: Hamza Mahfooz <[email protected]> To enable root clock optimizations, we need a number of register writes and need to account for the difference in DPSTREAMCLK between DCN31 and DCN314. To prevent issues, add a number of register writes to DCCG_MASK_SH_LIST_DCN314_COMMON(), and define dccg314_init() which is mostly in alignment with dccg31_init() but accounts for the new DPSTREAMCLK sequence.
Reviewed-by: Nicholas Kazlauskas <[email protected]> Acked-by: Qingqing Zhuo <[email protected]> Signed-off-by: Hamza Mahfooz <[email protected]> --- .../drm/amd/display/dc/dcn314/dcn314_dccg.c | 28 ++++++++++++++++++- .../drm/amd/display/dc/dcn314/dcn314_dccg.h | 6 ++++ 2 files changed, 33 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c index 081ce168f621..6f879265ad9c 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c @@ -274,6 +274,32 @@ static void dccg314_set_dpstreamclk( } } +void dccg314_init(struct dccg *dccg) +{ + int otg_inst; + + /* Set HPO stream encoder to use refclk to avoid case where PHY is + * disabled and SYMCLK32 for HPO SE is sourced from PHYD32CLK which + * will cause DCN to hang. + */ + for (otg_inst = 0; otg_inst < 4; otg_inst++) + dccg31_disable_symclk32_se(dccg, otg_inst); + + if (dccg->ctx->dc->debug.root_clock_optimization.bits.symclk32_le) + for (otg_inst = 0; otg_inst < 2; otg_inst++) + dccg31_disable_symclk32_le(dccg, otg_inst); + + if (dccg->ctx->dc->debug.root_clock_optimization.bits.dpstream) + for (otg_inst = 0; otg_inst < 4; otg_inst++) + dccg314_set_dpstreamclk(dccg, REFCLK, otg_inst, + otg_inst); + + if (dccg->ctx->dc->debug.root_clock_optimization.bits.physymclk) + for (otg_inst = 0; otg_inst < 5; otg_inst++) + dccg31_set_physymclk(dccg, otg_inst, + PHYSYMCLK_FORCE_SRC_SYMCLK, false); +} + static void dccg314_set_valid_pixel_rate( struct dccg *dccg, int ref_dtbclk_khz, @@ -315,7 +341,7 @@ static const struct dccg_funcs dccg314_funcs = { .update_dpp_dto = dccg31_update_dpp_dto, .dpp_root_clock_control = dccg314_dpp_root_clock_control, .get_dccg_ref_freq = dccg31_get_dccg_ref_freq, - .dccg_init = dccg31_init, + .dccg_init = dccg314_init, .set_dpstreamclk = dccg314_set_dpstreamclk, .enable_symclk32_se = dccg31_enable_symclk32_se, .disable_symclk32_se = dccg31_disable_symclk32_se, diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h index 6a35986307af..f62631ab53a2 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h @@ -155,6 +155,12 @@ DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_ROOT_SE3_GATE_DISABLE, mask_sh),\ DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_ROOT_LE0_GATE_DISABLE, mask_sh),\ DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_ROOT_LE1_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_SE0_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_SE1_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_SE2_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_SE3_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_LE0_GATE_DISABLE, mask_sh),\ + DCCG_SF(DCCG_GATE_DISABLE_CNTL3, SYMCLK32_LE1_GATE_DISABLE, mask_sh),\ DCCG_SF(HDMISTREAMCLK0_DTO_PARAM, HDMISTREAMCLK0_DTO_PHASE, mask_sh),\ DCCG_SF(HDMISTREAMCLK0_DTO_PARAM, HDMISTREAMCLK0_DTO_MODULO, mask_sh) -- 2.34.1
