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| author | Jon Lin <jon.lin@rock-chips.com> | 2021-08-05 16:27:53 +0800 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2021-08-12 09:34:11 +0800 |
| commit | 60df49d22d2586f50bba11eaa59a55f2baa4671f (patch) | |
| tree | 138615cc62e8118888576f7ade3abb1a541f68b6 /drivers | |
| parent | d70c0cab8f8bb8607f574e0e346d14cea1729903 (diff) | |
| download | u-boot-60df49d22d2586f50bba11eaa59a55f2baa4671f.tar.gz u-boot-60df49d22d2586f50bba11eaa59a55f2baa4671f.tar.bz2 u-boot-60df49d22d2586f50bba11eaa59a55f2baa4671f.zip | |
rockchip: px30: Support configure SFC
Make px30 SFC clock configurable
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/rockchip/clk_px30.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_px30.c b/drivers/clk/rockchip/clk_px30.c index 6b746f4c65..a49b6f19f4 100644 --- a/drivers/clk/rockchip/clk_px30.c +++ b/drivers/clk/rockchip/clk_px30.c @@ -581,6 +581,32 @@ static ulong px30_mmc_set_clk(struct px30_clk_priv *priv, return px30_mmc_get_clk(priv, clk_id); } +static ulong px30_sfc_get_clk(struct px30_clk_priv *priv, uint clk_id) +{ + struct px30_cru *cru = priv->cru; + u32 div, con; + + con = readl(&cru->clksel_con[22]); + div = (con & SFC_DIV_CON_MASK) >> SFC_DIV_CON_SHIFT; + + return DIV_TO_RATE(priv->gpll_hz, div); +} + +static ulong px30_sfc_set_clk(struct px30_clk_priv *priv, + ulong clk_id, ulong set_rate) +{ + struct px30_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->gpll_hz, set_rate); + rk_clrsetreg(&cru->clksel_con[22], + SFC_PLL_SEL_MASK | SFC_DIV_CON_MASK, + 0 << SFC_PLL_SEL_SHIFT | + (src_clk_div - 1) << SFC_DIV_CON_SHIFT); + + return px30_sfc_get_clk(priv, clk_id); +} + static ulong px30_pwm_get_clk(struct px30_clk_priv *priv, ulong clk_id) { struct px30_cru *cru = priv->cru; @@ -1192,6 +1218,9 @@ static ulong px30_clk_get_rate(struct clk *clk) case SCLK_EMMC_SAMPLE: rate = px30_mmc_get_clk(priv, clk->id); break; + case SCLK_SFC: + rate = px30_sfc_get_clk(priv, clk->id); + break; case SCLK_I2C0: case SCLK_I2C1: case SCLK_I2C2: @@ -1271,6 +1300,9 @@ static ulong px30_clk_set_rate(struct clk *clk, ulong rate) case SCLK_EMMC: ret = px30_mmc_set_clk(priv, clk->id, rate); break; + case SCLK_SFC: + ret = px30_sfc_set_clk(priv, clk->id, rate); + break; case SCLK_I2C0: case SCLK_I2C1: case SCLK_I2C2: |