From: Martin Sperl kernel@martin.sperl.org
Enable the PCM clock in the SOC, which is used by the bcm2835-i2s driver.
Signed-off-by: Martin Sperl kernel@martin.sperl.org --- drivers/clk/bcm/clk-bcm2835.c | 15 +++++++++++++++ include/dt-bindings/clock/bcm2835.h | 3 ++- 2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index 015e687..5d45457 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -88,6 +88,8 @@ #define CM_HSMDIV 0x08c #define CM_OTPCTL 0x090 #define CM_OTPDIV 0x094 +#define CM_PCMCTL 0x098 +#define CM_PCMDIV 0x09c #define CM_PWMCTL 0x0a0 #define CM_PWMDIV 0x0a4 #define CM_SMICTL 0x0b0 @@ -817,6 +819,16 @@ static const struct bcm2835_clock_data bcm2835_clock_pwm_data = { .frac_bits = 12, };
+static const struct bcm2835_clock_data bcm2835_clock_pcm_data = { + .name = "pcm", + .num_mux_parents = ARRAY_SIZE(bcm2835_clock_per_parents), + .parents = bcm2835_clock_per_parents, + .ctl_reg = CM_PCMCTL, + .div_reg = CM_PCMDIV, + .int_bits = 12, + .frac_bits = 12, +}; + struct bcm2835_pll { struct clk_hw hw; struct bcm2835_cprman *cprman; @@ -1515,6 +1527,7 @@ static int bcm2835_clk_probe(struct platform_device *pdev) cprman->regs = devm_ioremap_resource(dev, res); if (IS_ERR(cprman->regs)) return PTR_ERR(cprman->regs); + pr_info("CLK: %pK %zx\n", cprman->regs, res->start);
cprman->osc_name = of_clk_get_parent_name(dev->of_node, 0); if (!cprman->osc_name) @@ -1581,6 +1594,8 @@ static int bcm2835_clk_probe(struct platform_device *pdev) bcm2835_register_clock(cprman, &bcm2835_clock_hsm_data); clks[BCM2835_CLOCK_EMMC] = bcm2835_register_clock(cprman, &bcm2835_clock_emmc_data); + clks[BCM2835_CLOCK_PCM] = + bcm2835_register_clock(cprman, &bcm2835_clock_pcm_data);
/* * CM_PERIICTL (and CM_PERIACTL, CM_SYSCTL and CM_VPUCTL if diff --git a/include/dt-bindings/clock/bcm2835.h b/include/dt-bindings/clock/bcm2835.h index 61f1d20..0ec850e 100644 --- a/include/dt-bindings/clock/bcm2835.h +++ b/include/dt-bindings/clock/bcm2835.h @@ -44,5 +44,6 @@ #define BCM2835_CLOCK_EMMC 28 #define BCM2835_CLOCK_PERI_IMAGE 29 #define BCM2835_CLOCK_PWM 30 +#define BCM2835_CLOCK_PCM 31
-#define BCM2835_CLOCK_COUNT 31 +#define BCM2835_CLOCK_COUNT 32