See below
-----Original Message-----
From: Srivatsa, Anusha <anusha.srivatsa@xxxxxxxxx>
Sent: Friday, October 28, 2022 2:32 PM
To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Srivatsa, Anusha <anusha.srivatsa@xxxxxxxxx>; Taylor, Clinton A <clinton.a.taylor@xxxxxxxxx>
Subject: [PATCH 2/2] drm/i915/display: Add CDCLK Support for MTL
As per bSpec MTL has 38.4 MHz Reference clock.
Addin gthe cdclk tables and cdclk_funcs that MTL will use.
Spelling issue here. With this fixed
Reviewed-by: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
-Clint
v2: Revert to using bxt_get_cdclk()
BSpec: 65243
Cc: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index d79cf282faa8..54ac7f9a1253 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -1345,6 +1345,16 @@ static const struct intel_cdclk_vals dg2_cdclk_table[] = {
{}
};
+static const struct intel_cdclk_vals mtl_cdclk_table[] = {
+ { .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio = 16, .waveform = 0xad5a },
+ { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 16, .waveform = 0xb6b6 },
+ { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16, .waveform = 0x0000 },
+ { .refclk = 38400, .cdclk = 480000, .divider = 2, .ratio = 25, .waveform = 0x0000 },
+ { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29, .waveform = 0x0000 },
+ { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34, .waveform = 0x0000 },
+ {}
+};
+
static int bxt_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk) {
const struct intel_cdclk_vals *table = dev_priv->display.cdclk.table; @@ -3159,6 +3169,13 @@ u32 intel_read_rawclk(struct drm_i915_private *dev_priv)
return freq;
}
+static const struct intel_cdclk_funcs mtl_cdclk_funcs = {
+ .get_cdclk = bxt_get_cdclk,
+ .set_cdclk = bxt_set_cdclk,
+ .modeset_calc_cdclk = bxt_modeset_calc_cdclk,
+ .calc_voltage_level = tgl_calc_voltage_level, };
+
static const struct intel_cdclk_funcs tgl_cdclk_funcs = {
.get_cdclk = bxt_get_cdclk,
.set_cdclk = bxt_set_cdclk,
@@ -3294,7 +3311,10 @@ static const struct intel_cdclk_funcs i830_cdclk_funcs = {
*/
void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv) {
- if (IS_DG2(dev_priv)) {
+ if (IS_METEORLAKE(dev_priv)) {
+ dev_priv->display.funcs.cdclk = &mtl_cdclk_funcs;
+ dev_priv->display.cdclk.table = mtl_cdclk_table;
+ } else if (IS_DG2(dev_priv)) {
dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;
dev_priv->display.cdclk.table = dg2_cdclk_table;
} else if (IS_ALDERLAKE_P(dev_priv)) {
--
2.25.1
