[PATCH v8 5/5] rockchip: px30: Support configure SFC
From: Jon Lin <hidden>
Date: 2021-08-12 13:22:03
Subsystem:
arm/rockchip soc support, common clk framework, the rest · Maintainers:
Heiko Stuebner, Michael Turquette, Stephen Boyd, Linus Torvalds
Make px30 SFC clock configurable Signed-off-by: Jon Lin <redacted> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com> --- (no changes since v7) Changes in v7: - Make px30 SFC clock configurable drivers/clk/rockchip/clk_px30.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
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:
--
2.17.1