[alsa-devel] [PATCH] clk: x86: add "mclk" alias for Baytrail/Cherrytrail

[Pierre-Louis Bossart]

Due to timing requirements, TI and Conexant manage the audio
reference clock from their ASoC codec drivers using the "mclk"
string. This patch adds a default alias to "pmc_plt_clk_3" to
avoid Intel-specific tests in those codec drivers and use code
as-is.
"pmc_plt_clk_3" is used exclusively for audio on all known
Baytrail/CherryTrail designs and is e.g. routed on the MCLK
(pin 26) of the MinnowBoardMAX Turbot LSE connector.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---

Notes:
    This patch only applies on top of linux-next or clk-next, the
    previous clk-related patches are not yet merged in the audio
    trees

 drivers/clk/x86/clk-pmc-atom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c
index 2b60577..ba00d27 100644
--- a/drivers/clk/x86/clk-pmc-atom.c
+++ b/drivers/clk/x86/clk-pmc-atom.c
@@ -340,6 +340,8 @@ static int plt_clk_probe(struct platform_device *pdev)
 
 	plt_clk_free_parent_names_loop(parent_names, data->nparents);
 
+	clk_add_alias("mclk", dev_name(&pdev->dev), "pmc_plt_clk_3", NULL);
+
 	platform_set_drvdata(pdev, data);
 	return 0;
 
-- 
2.7.4