diff options
| author | Swapnil Jakhade <sjakhade@cadence.com> | 2021-12-23 09:01:33 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-12-27 14:05:09 +0300 |
| commit | da08aab940092a050a4fb2857ed9479d2b0e03c4 (patch) | |
| tree | e3316629dfc80c3b8219ede73d9ffdcf85206a17 /drivers/phy/cadence | |
| parent | 7a5ad9b4b98cd95f02ec12c895e80bc521fbf9ec (diff) | |
| download | linux-da08aab940092a050a4fb2857ed9479d2b0e03c4.tar.xz | |
phy: cadence: Sierra: Fix to get correct parent for mux clocks
Fix get_parent() callback to return the correct index of the parent for
PLL_CMNLC1 clock. Add a separate table of register values corresponding
to the parent index for PLL_CMNLC1. Update set_parent() callback
accordingly.
Fixes: 28081b72859f ("phy: cadence: Sierra: Model PLL_CMNLC and PLL_CMNLC1 as clocks (mux clocks)")
Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Reviewed-by: Aswath Govindraju <a-govindraju@ti.com>
Link: https://lore.kernel.org/r/20211223060137.9252-12-sjakhade@cadence.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy/cadence')
| -rw-r--r-- | drivers/phy/cadence/phy-cadence-sierra.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c index 728abd14aa79..abdbc6ebd5a8 100644 --- a/drivers/phy/cadence/phy-cadence-sierra.c +++ b/drivers/phy/cadence/phy-cadence-sierra.c @@ -257,7 +257,10 @@ static const int pll_mux_parent_index[][SIERRA_NUM_CMN_PLLC_PARENTS] = { [CMN_PLLLC1] = { PLL1_REFCLK, PLL0_REFCLK }, }; -static u32 cdns_sierra_pll_mux_table[] = { 0, 1 }; +static u32 cdns_sierra_pll_mux_table[][SIERRA_NUM_CMN_PLLC_PARENTS] = { + [CMN_PLLLC] = { 0, 1 }, + [CMN_PLLLC1] = { 1, 0 }, +}; enum cdns_sierra_phy_type { TYPE_NONE, @@ -567,11 +570,25 @@ static const struct phy_ops ops = { static u8 cdns_sierra_pll_mux_get_parent(struct clk_hw *hw) { struct cdns_sierra_pll_mux *mux = to_cdns_sierra_pll_mux(hw); + struct regmap_field *plllc1en_field = mux->plllc1en_field; + struct regmap_field *termen_field = mux->termen_field; struct regmap_field *field = mux->pfdclk_sel_preg; unsigned int val; + int index; regmap_field_read(field, &val); - return clk_mux_val_to_index(hw, cdns_sierra_pll_mux_table, 0, val); + + if (strstr(clk_hw_get_name(hw), clk_names[CDNS_SIERRA_PLL_CMNLC1])) { + index = clk_mux_val_to_index(hw, cdns_sierra_pll_mux_table[CMN_PLLLC1], 0, val); + if (index == 1) { + regmap_field_write(plllc1en_field, 1); + regmap_field_write(termen_field, 1); + } + } else { + index = clk_mux_val_to_index(hw, cdns_sierra_pll_mux_table[CMN_PLLLC], 0, val); + } + + return index; } static int cdns_sierra_pll_mux_set_parent(struct clk_hw *hw, u8 index) @@ -589,7 +606,11 @@ static int cdns_sierra_pll_mux_set_parent(struct clk_hw *hw, u8 index) ret |= regmap_field_write(termen_field, 1); } - val = cdns_sierra_pll_mux_table[index]; + if (strstr(clk_hw_get_name(hw), clk_names[CDNS_SIERRA_PLL_CMNLC1])) + val = cdns_sierra_pll_mux_table[CMN_PLLLC1][index]; + else + val = cdns_sierra_pll_mux_table[CMN_PLLLC][index]; + ret |= regmap_field_write(field, val); return ret; @@ -627,8 +648,8 @@ static int cdns_sierra_pll_mux_register(struct cdns_sierra_phy *sp, for (i = 0; i < num_parents; i++) { clk = sp->input_clks[pll_mux_parent_index[clk_index][i]]; if (IS_ERR_OR_NULL(clk)) { - dev_err(dev, "No parent clock for derived_refclk\n"); - return PTR_ERR(clk); + dev_err(dev, "No parent clock for PLL mux clocks\n"); + return IS_ERR(clk) ? PTR_ERR(clk) : -ENOENT; } parent_names[i] = __clk_get_name(clk); } |