diff mbox

[1/2] ARM i.MX53: register CAN clocks

Message ID 1342604563-18915-2-git-send-email-mkl@pengutronix.de
State New
Headers show

Commit Message

Marc Kleine-Budde July 18, 2012, 9:42 a.m. UTC 
From: Sascha Hauer <s.hauer@pengutronix.de>

On the imx53, the flexcan core has two clocks, the ipg and the per clock.
This patch adds these clocks for both flexcans on the imx53.

An updated flexcan driver, taking advantage of these clocks, is currently
in the review process.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 arch/arm/mach-imx/clk-imx51-imx53.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c
index a2200c7..37eb420 100644
--- a/arch/arm/mach-imx/clk-imx51-imx53.c
+++ b/arch/arm/mach-imx/clk-imx51-imx53.c
@@ -49,6 +49,7 @@  static const char *mx53_tve_ext_sel[] = { "pll4_sw", "ckih1", };
 static const char *tve_sel[] = { "tve_pred", "tve_ext_sel", };
 static const char *ipu_sel[] = { "axi_a", "axi_b", "emi_slow_gate", "ahb", };
 static const char *vpu_sel[] = { "axi_a", "axi_b", "emi_slow_gate", "ahb", };
+static const char *mx53_can_sel[] = { "ipg", "ckih1", "ckih2", "lp_apm", };
 
 enum imx5_clks {
 	dummy, ckil, osc, ckih1, ckih2, ahb, ipg, axi_a, axi_b, uart_pred,
@@ -81,6 +82,7 @@  enum imx5_clks {
 	ssi1_root_podf, ssi2_root_pred, ssi2_root_podf, ssi_ext1_pred,
 	ssi_ext1_podf, ssi_ext2_pred, ssi_ext2_podf, ssi1_root_gate,
 	ssi2_root_gate, ssi3_root_gate, ssi_ext1_gate, ssi_ext2_gate,
+	can_sel, can1_serial_gate, can1_ipg_gate,
 	clk_max
 };
 
@@ -411,8 +413,12 @@  int __init mx53_clocks_init(unsigned long rate_ckil, unsigned long rate_osc,
 	clk[esdhc4_per_gate] = imx_clk_gate2("esdhc4_per_gate", "esdhc_d_sel", MXC_CCM_CCGR3, 14);
 	clk[usb_phy1_gate] = imx_clk_gate2("usb_phy1_gate", "usb_phy_sel", MXC_CCM_CCGR4, 10);
 	clk[usb_phy2_gate] = imx_clk_gate2("usb_phy2_gate", "usb_phy_sel", MXC_CCM_CCGR4, 12);
-	clk[can2_serial_gate] = imx_clk_gate2("can2_serial_gate", "ipg", MXC_CCM_CCGR4, 6);
-	clk[can2_ipg_gate] = imx_clk_gate2("can2_ipg_gate", "ipg", MXC_CCM_CCGR4, 8);
+	clk[can_sel] = imx_clk_mux("can_sel", MXC_CCM_CSCMR2, 6, 2,
+				mx53_can_sel, ARRAY_SIZE(mx53_can_sel));
+	clk[can1_serial_gate] = imx_clk_gate2("can1_serial_gate", "can_sel", MXC_CCM_CCGR6, 22);
+	clk[can1_ipg_gate] = imx_clk_gate2("can1_ipg_gate", "ipg", MXC_CCM_CCGR6, 20);
+	clk[can2_serial_gate] = imx_clk_gate2("can2_serial_gate", "can_sel", MXC_CCM_CCGR4, 8);
+	clk[can2_ipg_gate] = imx_clk_gate2("can2_ipg_gate", "ipg", MXC_CCM_CCGR4, 6);
 	clk[i2c3_gate] = imx_clk_gate2("i2c3_gate", "per_root", MXC_CCM_CCGR1, 22);
 
 	for (i = 0; i < ARRAY_SIZE(clk); i++)
@@ -445,6 +451,10 @@  int __init mx53_clocks_init(unsigned long rate_ckil, unsigned long rate_osc,
 	clk_register_clkdev(clk[ssi1_ipg_gate], NULL, "63fcc000.ssi");
 	clk_register_clkdev(clk[ssi2_ipg_gate], NULL, "50014000.ssi");
 	clk_register_clkdev(clk[ssi3_ipg_gate], NULL, "63fd0000.ssi");
+	clk_register_clkdev(clk[can1_ipg_gate], "ipg", "53fc8000.can");
+	clk_register_clkdev(clk[can1_serial_gate], "per", "53fc8000.can");
+	clk_register_clkdev(clk[can2_ipg_gate], "ipg", "53fcc000.can");
+	clk_register_clkdev(clk[can2_serial_gate], "per", "53fcc000.can");
 
 	/* set SDHC root clock to 200MHZ*/
 	clk_set_rate(clk[esdhc_a_podf], 200000000);