[PATCH] ARM: imx6q: Add missing esai_ahb clock to current clock tree
From: s.hauer@pengutronix.de (Sascha Hauer)
Date: 2014-01-09 07:55:57
Also in:
linux-devicetree, lkml
[Added Mike Turquette to Cc] On Thu, Jan 09, 2014 at 11:04:59AM +0800, Nicolin Chen wrote:
esai_ahb clock is derived from ahb and used to provide ESAI the capability of register accessing and FSYS clock source for I2S clocks dividing. Although the gate of this esai_ahb is duplicated with esai clock -- the baud clock, yet considering about the differences of their clock rates, it's quite essential to patch this missing clock.
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quoted hunk ↗ jump to hunk
static struct clk *clk[clk_max];@@ -355,6 +355,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[ecspi5] = imx_clk_gate2("ecspi5", "ecspi_root", base + 0x6c, 8); clk[enet] = imx_clk_gate2("enet", "ipg", base + 0x6c, 10); clk[esai] = imx_clk_gate2("esai", "esai_podf", base + 0x6c, 16); + clk[esai_ahb] = imx_clk_gate2("esai_ahb", "ahb", base + 0x6c, 16);
We have the situation here that a single bit controls two clocks. As Shawn mentioned just using two gates on the same bit doesn't work properly. Do we need a new basic clock type or expand the common gate code somehow? This situation happens from time to time and I haven't seen a solution for this. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |