commit 8e9cc80aa348938078c3c1a7ab55efb3c40990e3
author Peter De Schrijver <pdeschrijver@nvidia.com> Mon Nov 25 14:44:13 2013 +0200
committer Peter De Schrijver <pdeschrijver@nvidia.com> Tue Nov 26 18:46:21 2013 +0200
tree 28f27ff2c2a39de09c0ec3a0f100b5c5243f0646
parent 04edb099a4a7e774a98b241dc016957922cbfb44

clk: tegra: use pll_ref as the pll_e parent

Use pll_ref instead of pll_re_vco as the pll_e parent on Tegra114. Also
add a 12Mhz pll_ref table entry for pll_e for Tegra114. This prevents
the system from crashing at bootup because of an unsupported pll_re_vco
rate.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>

drivers/clk/tegra/clk-pll.c

diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index 8f51147..48f6bff 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -1704,11 +1704,13 @@
 	val_aux = pll_readl(pll_params->aux_reg, pll);
 
 	if (val & PLL_BASE_ENABLE) {
-		if (!(val_aux & PLLE_AUX_PLLRE_SEL))
+		if ((val_aux & PLLE_AUX_PLLRE_SEL) ||
+			(val_aux & PLLE_AUX_PLLP_SEL))
 			WARN(1, "pll_e enabled with unsupported parent %s\n",
-			  (val & PLLE_AUX_PLLP_SEL) ? "pllp_out0" : "pll_ref");
+			  (val_aux & PLLE_AUX_PLLP_SEL) ? "pllp_out0" :
+					"pll_re_vco");
 	} else {
-		val_aux |= PLLE_AUX_PLLRE_SEL;
+		val_aux &= ~(PLLE_AUX_PLLRE_SEL | PLLE_AUX_PLLP_SEL);
 		pll_writel(val, pll_params->aux_reg, pll);
 	}
 

drivers/clk/tegra/clk-tegra114.c

diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index fa562e3..e62e476 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -637,6 +637,7 @@
 	/* PLLE special case: use cpcon field to store cml divider value */
 	{336000000, 100000000, 100, 21, 16, 11},
 	{312000000, 100000000, 200, 26, 24, 13},
+	{12000000, 100000000, 200,  1,  24, 13},
 	{0, 0, 0, 0, 0, 0},
 };
 
@@ -1301,7 +1302,7 @@
 	clks[TEGRA114_CLK_PLL_RE_OUT] = clk;
 
 	/* PLLE */
-	clk = tegra_clk_register_plle_tegra114("pll_e_out0", "pll_re_vco",
+	clk = tegra_clk_register_plle_tegra114("pll_e_out0", "pll_ref",
 				      clk_base, 0, 100000000, &pll_e_params,
 				      pll_e_freq_table, NULL);
 	clk_register_clkdev(clk, "pll_e_out0", NULL);