From: Daniel Mack <daniel@zonque.org>
To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org
Cc: robh+dt@kernel.org, kuninori.morimoto.gx@renesas.com,
mturquette@baylibre.com, sboyd@kernel.org,
Daniel Mack <daniel@zonque.org>
Subject: [PATCH v2 3/3] clk: cs2000-cp: Make aux output function controllable
Date: Wed, 19 May 2021 22:15:51 +0200 [thread overview]
Message-ID: <20210519201551.690654-4-daniel@zonque.org> (raw)
In-Reply-To: <20210519201551.690654-1-daniel@zonque.org>
The aux output pin can be configured to output either of the two clock
inputs, the generated clock or the pll lock status. Allow access to
this feature through a new optional device-tree property.
Signed-off-by: Daniel Mack <daniel@zonque.org>
---
drivers/clk/clk-cs2000-cp.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/clk/clk-cs2000-cp.c b/drivers/clk/clk-cs2000-cp.c
index 92bc4aca0f95..db7290621cef 100644
--- a/drivers/clk/clk-cs2000-cp.c
+++ b/drivers/clk/clk-cs2000-cp.c
@@ -39,6 +39,8 @@
/* DEVICE_CFG1 */
#define RSEL(x) (((x) & 0x3) << 3)
#define RSEL_MASK RSEL(0x3)
+#define AUXOUTSRC(x) (((x) & 0x3) << 1)
+#define AUXOUTSRC_MASK AUXOUTSRC(0x3)
#define ENDEV1 (0x1)
/* DEVICE_CFG2 */
@@ -421,12 +423,19 @@ static int cs2000_clk_register(struct cs2000_priv *priv)
struct clk_init_data init;
const char *name = np->name;
static const char *parent_names[CLK_MAX];
+ u32 aux_out = 0;
int ch = 0; /* it uses ch0 only at this point */
int rate;
int ret;
of_property_read_string(np, "clock-output-names", &name);
+ of_property_read_u32(np, "cirrus,aux-output-source", &aux_out);
+ ret = cs2000_bset(priv, DEVICE_CFG1,
+ AUXOUTSRC_MASK, AUXOUTSRC(aux_out));
+ if (ret < 0)
+ return ret;
+
/*
* set default rate as 1/1.
* otherwise .set_rate which setup ratio
--
2.31.1
prev parent reply other threads:[~2021-05-19 20:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-19 20:15 [PATCH v2 0/3] clk: cs2000-cp: make aux output pin configurable Daniel Mack
2021-05-19 20:15 ` [PATCH v2 1/3] dt-bindings: clock: convert cs2000-cp bindings to yaml Daniel Mack
2021-05-21 1:59 ` Rob Herring
2021-05-19 20:15 ` [PATCH v2 2/3] dt-bindings: clock: cs2000-cp: Document aux-output-source Daniel Mack
2021-05-21 2:00 ` Rob Herring
2021-06-02 11:13 ` Daniel Mack
2021-06-11 12:18 ` Geert Uytterhoeven
2021-06-17 13:10 ` Daniel Mack
2021-05-19 20:15 ` Daniel Mack [this message]
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