rockchip: rk3288: Add i2s pinctrl and clock support

Add support for setting pinctrl and clock for I2S on rk3288. This allows
the sound driver to operate. These settings were created by rkmux.py

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
Simon Glass 2018-12-27 20:15:20 -07:00 committed by Philipp Tomsich
parent db4a29993d
commit 3dbfe5ae61
5 changed files with 167 additions and 0 deletions

View file

@ -75,6 +75,14 @@ enum {
MMC0_DIV_MASK = 0x3f << MMC0_DIV_SHIFT,
};
/* CRU_CLKSEL8_CON */
enum {
I2S0_FRAC_DENOM_SHIFT = 0,
I2S0_FRAC_DENOM_MASK = 0xffff << I2S0_FRAC_DENOM_SHIFT,
I2S0_FRAC_NUMER_SHIFT = 16,
I2S0_FRAC_NUMER_MASK = 0xffffu << I2S0_FRAC_NUMER_SHIFT,
};
/* CRU_CLKSEL12_CON */
enum {
EMMC_PLL_SHIFT = 0xe,

View file

@ -561,6 +561,49 @@ enum {
GPIO5C0_TS0_SYNC,
};
/* GRF_GPIO6A_IOMUX */
enum {
GPIO6A7_SHIFT = 0xe,
GPIO6A7_MASK = 1,
GPIO6A7_GPIO = 0,
GPIO6A7_I2S_SDO3,
GPIO6A6_SHIFT = 0xc,
GPIO6A6_MASK = 1,
GPIO6A6_GPIO = 0,
GPIO6A6_I2S_SDO2,
GPIO6A5_SHIFT = 0xa,
GPIO6A5_MASK = 1,
GPIO6A5_GPIO = 0,
GPIO6A5_I2S_SDO1,
GPIO6A4_SHIFT = 8,
GPIO6A4_MASK = 1,
GPIO6A4_GPIO = 0,
GPIO6A4_I2S_SDO0,
GPIO6A3_SHIFT = 6,
GPIO6A3_MASK = 1,
GPIO6A3_GPIO = 0,
GPIO6A3_I2S_SDI,
GPIO6A2_SHIFT = 4,
GPIO6A2_MASK = 1,
GPIO6A2_GPIO = 0,
GPIO6A2_I2S_LRCKTX,
GPIO6A1_SHIFT = 2,
GPIO6A1_MASK = 1,
GPIO6A1_GPIO = 0,
GPIO6A1_I2S_LRCKRX,
GPIO6A0_SHIFT = 0,
GPIO6A0_MASK = 1,
GPIO6A0_GPIO = 0,
GPIO6A0_I2S_SCLK,
};
/* GRF_GPIO6B_IOMUX */
enum {
GPIO6B3_SHIFT = 6,
@ -1042,6 +1085,59 @@ enum GRF_SOC_CON8 {
RK3288_DPHY_TX0_TURNREQUEST_DIS = 0,
};
/* GRF_IO_VSEL */
enum {
GPIO1830_V18SEL_SHIFT = 9,
GPIO1830_V18SEL_MASK = 1,
GPIO1830_V18SEL_3_3V = 0,
GPIO1830_V18SEL_1_8V,
GPIO30_V18SEL_SHIFT = 8,
GPIO30_V18SEL_MASK = 1,
GPIO30_V18SEL_3_3V = 0,
GPIO30_V18SEL_1_8V,
SDCARD_V18SEL_SHIFT = 7,
SDCARD_V18SEL_MASK = 1,
SDCARD_V18SEL_3_3V = 0,
SDCARD_V18SEL_1_8V,
AUDIO_V18SEL_SHIFT = 6,
AUDIO_V18SEL_MASK = 1,
AUDIO_V18SEL_3_3V = 0,
AUDIO_V18SEL_1_8V,
BB_V18SEL_SHIFT = 5,
BB_V18SEL_MASK = 1,
BB_V18SEL_3_3V = 0,
BB_V18SEL_1_8V,
WIFI_V18SEL_SHIFT = 4,
WIFI_V18SEL_MASK = 1,
WIFI_V18SEL_3_3V = 0,
WIFI_V18SEL_1_8V,
FLASH1_V18SEL_SHIFT = 3,
FLASH1_V18SEL_MASK = 1,
FLASH1_V18SEL_3_3V = 0,
FLASH1_V18SEL_1_8V,
FLASH0_V18SEL_SHIFT = 2,
FLASH0_V18SEL_MASK = 1,
FLASH0_V18SEL_3_3V = 0,
FLASH0_V18SEL_1_8V,
DVP_V18SEL_SHIFT = 1,
DVP_V18SEL_MASK = 1,
DVP_V18SEL_3_3V = 0,
DVP_V18SEL_1_8V,
LCDC_V18SEL_SHIFT = 0,
LCDC_V18SEL_MASK = 1,
LCDC_V18SEL_3_3V = 0,
LCDC_V18SEL_1_8V,
};
/* GPIO Bias settings */
enum GPIO_BIAS {
GPIO_BIAS_2MA = 0,

View file

@ -45,6 +45,7 @@ enum periph_id {
PERIPH_ID_HDMI,
PERIPH_ID_GMAC,
PERIPH_ID_SFC,
PERIPH_ID_I2S,
PERIPH_ID_COUNT,

View file

@ -6,6 +6,7 @@
#include <common.h>
#include <bitfield.h>
#include <clk-uclass.h>
#include <div64.h>
#include <dm.h>
#include <dt-structs.h>
#include <errno.h>
@ -371,6 +372,50 @@ static int rockchip_vop_set_clk(struct rk3288_cru *cru, struct rk3288_grf *grf,
return 0;
}
static u32 rockchip_clk_gcd(u32 a, u32 b)
{
while (b != 0) {
int r = b;
b = a % b;
a = r;
}
return a;
}
static ulong rockchip_i2s_get_clk(struct rk3288_cru *cru, uint gclk_rate)
{
unsigned long long rate;
uint val;
int n, d;
val = readl(&cru->cru_clksel_con[8]);
n = (val & I2S0_FRAC_NUMER_MASK) >> I2S0_FRAC_NUMER_SHIFT;
d = (val & I2S0_FRAC_DENOM_MASK) >> I2S0_FRAC_DENOM_SHIFT;
rate = (unsigned long long)gclk_rate * n;
do_div(rate, d);
return (ulong)rate;
}
static ulong rockchip_i2s_set_clk(struct rk3288_cru *cru, uint gclk_rate,
uint freq)
{
int n, d;
int v;
/* set frac divider */
v = rockchip_clk_gcd(gclk_rate, freq);
n = gclk_rate / v;
d = freq / v;
assert(freq == gclk_rate / n * d);
writel(d << I2S0_FRAC_NUMER_SHIFT | n << I2S0_FRAC_DENOM_SHIFT,
&cru->cru_clksel_con[8]);
return rockchip_i2s_get_clk(cru, gclk_rate);
}
#endif /* CONFIG_SPL_BUILD */
static void rkclk_init(struct rk3288_cru *cru, struct rk3288_grf *grf)
@ -769,6 +814,9 @@ static ulong rk3288_clk_set_rate(struct clk *clk, ulong rate)
new_rate = rockchip_spi_set_clk(cru, gclk_rate, clk->id, rate);
break;
#ifndef CONFIG_SPL_BUILD
case SCLK_I2S0:
new_rate = rockchip_i2s_set_clk(cru, gclk_rate, rate);
break;
case SCLK_MAC:
new_rate = rockchip_mac_set_clk(priv->cru, rate);
break;

View file

@ -531,6 +531,17 @@ static void pinctrl_rk3288_hdmi_config(struct rk3288_grf *grf, int hdmi_id)
break;
}
}
static void pinctrl_rk3288_i2s_config(struct rk3288_grf *grf)
{
rk_setreg(&grf->gpio6a_iomux, GPIO6A4_I2S_SDO0 << GPIO6A4_SHIFT |
GPIO6A3_I2S_SDI << GPIO6A3_SHIFT |
GPIO6A2_I2S_LRCKTX << GPIO6A2_SHIFT |
GPIO6A1_I2S_LRCKRX << GPIO6A1_SHIFT |
GPIO6A0_I2S_SCLK << GPIO6A0_SHIFT);
rk_setreg(&grf->gpio6b_iomux, GPIO6B0_I2S_CLK << GPIO6B0_SHIFT);
rk_setreg(&grf->io_vsel, AUDIO_V18SEL_1_8V << AUDIO_V18SEL_SHIFT);
}
#endif
static int rk3288_pinctrl_request(struct udevice *dev, int func, int flags)
@ -567,6 +578,9 @@ static int rk3288_pinctrl_request(struct udevice *dev, int func, int flags)
pinctrl_rk3288_uart_config(priv->grf, func);
break;
#ifndef CONFIG_SPL_BUILD
case PERIPH_ID_I2S:
pinctrl_rk3288_i2s_config(priv->grf);
break;
case PERIPH_ID_LCDC0:
case PERIPH_ID_LCDC1:
pinctrl_rk3288_lcdc_config(priv->grf, func);