[PATCH 1/3] clk: mxs: clk-imx28: Provide a dummy clock

Fabio Estevam
2013-06-25T13:59:59Z

Sometimes it is useful to be able to pass a dummy clock for a driver.

Add support for a dummy clock.

Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Documentation/devicetree/bindings/clock/imx28-clock.txt | 1 +
drivers/clk/mxs/clk-imx28.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/clock/imx28-clock.txt b/Documentation/devicetree/bindings/clock/imx28-clock.txt
index e6587af..5a153ef 100644
--- a/Documentation/devicetree/bindings/clock/imx28-clock.txt
+++ b/Documentation/devicetree/bindings/clock/imx28-clock.txt
@@ -76,6 +76,7 @@ clocks and IDs.
usb0_phy 62
usb1_phy 63
enet_out 64
+ dummy 65

Examples:

diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index 4faf0af..6b55211 100644
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c
@@ -143,7 +143,7 @@ enum imx28_clk {
emi_xtal, lcdif_div, etm_div, ptp, saif0_div, saif1_div,
clk32k_div, rtc, lradc, spdif_div, clk32k, pwm, uart, ssp0,
ssp1, ssp2, ssp3, gpmi, spdif, emi, saif0, saif1, lcdif, etm,
- fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out,
+ fec, can0, can1, usb0, usb1, usb0_phy, usb1_phy, enet_out, dummy,
clk_max
};

@@ -234,6 +234,7 @@ int __init mx28_clocks_init(void)
clks[usb0_phy] = clk_register_gate(NULL, "usb0_phy", "pll0", 0, PLL0CTRL0, 18, 0, &mxs_lock);
clks[usb1_phy] = clk_register_gate(NULL, "usb1_phy", "pll1", 0, PLL1CTRL0, 18, 0, &mxs_lock);
clks[enet_out] = clk_register_gate(NULL, "enet_out", "pll2", 0, ENET, 18, 0, &mxs_lock);
+ clks[dummy] = mxs_clk_fixed("dummy", 0);

for (i = 0; i < ARRAY_SIZE(clks); i++)
if (IS_ERR(clks[i])) {
--
1.8.1.2