drm/i915/cx0: Add PLL information for MTL+

Start bringing MTL+ platforms as part of PLL framework.
The work is started by adding PLL information and related
function hooks.

BSpec: 55726

v2: Revise commit message and add BSpec ID (Suraj)

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20251117104602.2363671-17-mika.kahola@intel.com

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 8c345e1bdd94..23f22c495ec7 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -4305,6 +4305,25 @@ static const struct intel_dpll_mgr adlp_pll_mgr = {
 	.compare_hw_state = icl_compare_hw_state,
 };
 
+static const struct intel_dpll_funcs mtl_pll_funcs = {
+};
+
+static const struct dpll_info mtl_plls[] = {
+	{ .name = "DPLL 0", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	/* TODO: Add TBT PLL */
+	{ .name = "TC PLL 1", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_MGPLL1, },
+	{ .name = "TC PLL 2", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_MGPLL2, },
+	{ .name = "TC PLL 3", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_MGPLL3, },
+	{ .name = "TC PLL 4", .funcs = &mtl_pll_funcs, .id = DPLL_ID_ICL_MGPLL4, },
+	{}
+};
+
+__maybe_unused
+static const struct intel_dpll_mgr mtl_pll_mgr = {
+	.dpll_info = mtl_plls,
+};
+
 /**
  * intel_dpll_init - Initialize DPLLs
  * @display: intel_display device