diff options
| author | Daniel Machon <daniel.machon@microchip.com> | 2023-04-17 20:03:33 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-05-08 13:43:01 +0200 |
| commit | 96bb1664257c7d7507c7b324a952603e2b0a625e (patch) | |
| tree | e9583f353355203e50b50f626a449f4159d4a44d /drivers/phy | |
| parent | phy: sparx5-serdes: power down all CMUs by default (diff) | |
| download | linux-96bb1664257c7d7507c7b324a952603e2b0a625e.tar.xz linux-96bb1664257c7d7507c7b324a952603e2b0a625e.zip | |
phy: sparx5-serdes: power on CMUs individually
Power on the CMU instance, that provides the clock for the serdes, given the
specified serdes mode and index. The CMU instance is looked up, using a
preset map of serdes mode and index to CMU index.
Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Link: https://lore.kernel.org/r/20230417180335.2787494-6-daniel.machon@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/microchip/sparx5_serdes.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/phy/microchip/sparx5_serdes.c b/drivers/phy/microchip/sparx5_serdes.c index 0e9db7b36b60..a6638d783a01 100644 --- a/drivers/phy/microchip/sparx5_serdes.c +++ b/drivers/phy/microchip/sparx5_serdes.c @@ -25,6 +25,7 @@ #define SPX5_SERDES_10G_START 13 #define SPX5_SERDES_25G_START 25 +#define SPX5_SERDES_6G10G_CNT SPX5_SERDES_25G_START /* Optimal power settings from GUC */ #define SPX5_SERDES_QUIET_MODE_VAL 0x01ef4e0c @@ -34,6 +35,7 @@ enum sparx5_10g28cmu_mode { SPX5_SD10G28_CMU_AUX1 = 1, SPX5_SD10G28_CMU_AUX2 = 3, SPX5_SD10G28_CMU_NONE = 4, + SPX5_SD10G28_CMU_MAX, }; enum sparx5_sd25g28_mode_preset_type { @@ -1078,6 +1080,39 @@ leave: return err; } +/* Map of 6G/10G serdes mode and index to CMU index. */ +static const int +sparx5_serdes_cmu_map[SPX5_SD10G28_CMU_MAX][SPX5_SERDES_6G10G_CNT] = { + [SPX5_SD10G28_CMU_MAIN] = { 2, 2, 2, 2, 2, + 2, 2, 2, 5, 5, + 5, 5, 5, 5, 5, + 5, 8, 11, 11, 11, + 11, 11, 11, 11, 11 }, + [SPX5_SD10G28_CMU_AUX1] = { 0, 0, 3, 3, 3, + 3, 3, 3, 3, 3, + 6, 6, 6, 6, 6, + 6, 6, 9, 9, 12, + 12, 12, 12, 12, 12 }, + [SPX5_SD10G28_CMU_AUX2] = { 1, 1, 1, 1, 4, + 4, 4, 4, 4, 4, + 4, 4, 7, 7, 7, + 7, 7, 10, 10, 10, + 10, 13, 13, 13, 13 }, + [SPX5_SD10G28_CMU_NONE] = { 1, 1, 1, 1, 4, + 4, 4, 4, 4, 4, + 4, 4, 7, 7, 7, + 7, 7, 10, 10, 10, + 10, 13, 13, 13, 13 }, +}; + +/* Get the index of the CMU which provides the clock for the specified serdes + * mode and index. + */ +static int sparx5_serdes_cmu_get(enum sparx5_10g28cmu_mode mode, int sd_index) +{ + return sparx5_serdes_cmu_map[mode][sd_index]; +} + static void sparx5_serdes_cmu_power_off(struct sparx5_serdes_private *priv) { void __iomem *cmu_inst, *cmu_cfg_inst; @@ -1626,7 +1661,13 @@ static int sparx5_sd10g28_apply_params(struct sparx5_serdes_macro *macro, u32 lane_index = macro->sidx; u32 sd_index = macro->stpidx; void __iomem *sd_inst; - u32 value; + u32 value, cmu_idx; + int err; + + cmu_idx = sparx5_serdes_cmu_get(params->cmu_sel, lane_index); + err = sparx5_cmu_cfg(priv, cmu_idx); + if (err) + return err; if (params->is_6g) sd_inst = sdx5_inst_get(priv, TARGET_SD6G_LANE, sd_index); |