clk: bcm2835: Add PWM clock support

Register the pwm clock for bcm2835.

Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>

2 files changed, 15 insertions, 1 deletions

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 6e4dd6fa3403..015e687ffabe 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -807,6 +807,16 @@ static const struct bcm2835_clock_data bcm2835_clock_emmc_data = {
         .frac_bits = 8,
 };
 
+static const struct bcm2835_clock_data bcm2835_clock_pwm_data = {
+        .name = "pwm",
+        .num_mux_parents = ARRAY_SIZE(bcm2835_clock_per_parents),
+        .parents = bcm2835_clock_per_parents,
+        .ctl_reg = CM_PWMCTL,
+        .div_reg = CM_PWMDIV,
+        .int_bits = 12,
+        .frac_bits = 12,
+};
+
 struct bcm2835_pll {
         struct clk_hw hw;
         struct bcm2835_cprman *cprman;
@@ -1584,6 +1594,9 @@ static int bcm2835_clk_probe(struct platform_device *pdev)
                                   cprman->regs + CM_PERIICTL, CM_GATE_BIT,
                                   0, &cprman->regs_lock);
 
+        clks[BCM2835_CLOCK_PWM] =
+                bcm2835_register_clock(cprman, &bcm2835_clock_pwm_data);
+
         return of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
                                    &cprman->onecell);
 }
diff --git a/include/dt-bindings/clock/bcm2835.h b/include/dt-bindings/clock/bcm2835.h
index d323efac7edf..61f1d20c2a67 100644
--- a/include/dt-bindings/clock/bcm2835.h
+++ b/include/dt-bindings/clock/bcm2835.h
@@ -43,5 +43,6 @@
 #define BCM2835_CLOCK_TSENS             27
 #define BCM2835_CLOCK_EMMC              28
 #define BCM2835_CLOCK_PERI_IMAGE        29
+#define BCM2835_CLOCK_PWM               30
 
-#define BCM2835_CLOCK_COUNT             30
+#define BCM2835_CLOCK_COUNT             31