Thread (30 messages) 30 messages, 5 authors, 2014-11-03
STALE4254d

[PATCH 3/4] clocksource: armada-370-xp: Use the reference clock on A375 SoC

From: Thomas Petazzoni <hidden>
Date: 2014-10-22 13:54:10
Also in: linux-watchdog

Dear Ezequiel Garcia,

On Wed, 22 Oct 2014 10:34:43 -0300, Ezequiel Garcia wrote:
+static void __init armada_375_timer_init(struct device_node *np)
+{
+	struct clk *clk;
+
+	clk = of_clk_get_by_name(np, "fixed");
+	if (!IS_ERR(clk)) {
+		clk_prepare_enable(clk);
+		timer_clk = clk_get_rate(clk);
+	} else {
+
+		/*
+		 * This fallback is required in order to retain proper
+		 * devicetree backwards compatibility.
+		 */
+		clk = of_clk_get(np, 0);
+
+		/* Must have at least a clock */
+		BUG_ON(IS_ERR(clk));
+		clk_prepare_enable(clk);
+		timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;
+		timer25Mhz = false;
+	}
Maybe we could re-use a bit more existing code, don't know if it makes
things clearer though:

	clk = of_clk_get_by_name(np, "fixed");
	if (!IS_ERR(clk))
		armada_xp_timer_init(np);
	else
		armada_370_timer_init(np);

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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