diff options
| author | Johannes Krottmayer <krjdev@gmail.com> | 2020-07-08 23:57:38 +0200 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2020-07-22 20:22:00 +0800 |
| commit | 19933b66f48ccdf97c4e8542092a1ee814a85097 (patch) | |
| tree | 96410256f43ff3cd4e2da75082d1d9f53bab4a08 /drivers/clk/rockchip | |
| parent | d4271fa28ca05b9c5ec67b21f492304709246a86 (diff) | |
| download | u-boot-19933b66f48ccdf97c4e8542092a1ee814a85097.tar.gz | |
drivers: clk: rockchip: clk_rk3328: Add SPI support
Add SPI support for the RK3328 clock driver
Signed-off-by: Johannes Krottmayer <krjdev@gmail.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers/clk/rockchip')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3328.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3328.c b/drivers/clk/rockchip/clk_rk3328.c index 02d3b08efa..bf4f1069ea 100644 --- a/drivers/clk/rockchip/clk_rk3328.c +++ b/drivers/clk/rockchip/clk_rk3328.c @@ -555,6 +555,31 @@ static ulong rk3328_saradc_set_clk(struct rk3328_cru *cru, uint hz) return rk3328_saradc_get_clk(cru); } +static ulong rk3328_spi_get_clk(struct rk3328_cru *cru) +{ + u32 div, val; + + val = readl(&cru->clksel_con[24]); + div = (val & CLK_SPI_DIV_CON_MASK) >> CLK_SPI_DIV_CON_SHIFT; + + return DIV_TO_RATE(OSC_HZ, div); +} + +static ulong rk3328_spi_set_clk(struct rk3328_cru *cru, uint hz) +{ + u32 src_clk_div; + + src_clk_div = GPLL_HZ / hz; + assert(src_clk_div < 128); + + rk_clrsetreg(&cru->clksel_con[24], + CLK_PWM_PLL_SEL_MASK | CLK_PWM_DIV_CON_MASK, + CLK_PWM_PLL_SEL_GPLL << CLK_PWM_PLL_SEL_SHIFT | + (src_clk_div - 1) << CLK_PWM_DIV_CON_SHIFT); + + return rk3328_spi_get_clk(cru); +} + static ulong rk3328_clk_get_rate(struct clk *clk) { struct rk3328_clk_priv *priv = dev_get_priv(clk->dev); @@ -581,6 +606,9 @@ static ulong rk3328_clk_get_rate(struct clk *clk) case SCLK_SARADC: rate = rk3328_saradc_get_clk(priv->cru); break; + case SCLK_SPI: + rate = rk3328_spi_get_clk(priv->cru); + break; default: return -ENOENT; } @@ -617,6 +645,9 @@ static ulong rk3328_clk_set_rate(struct clk *clk, ulong rate) case SCLK_SARADC: ret = rk3328_saradc_set_clk(priv->cru, rate); break; + case SCLK_SPI: + ret = rk3328_spi_set_clk(priv->cru, rate); + break; case DCLK_LCDC: case SCLK_PDM: case SCLK_RTC32K: |