Patchwork [04/11] ARM i.MX6q: Add audio/video PLL post dividers for i.MX6q rev 1.1

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Submitter Philipp Zabel
Date March 26, 2013, 2:13 p.m.
Message ID <1364307246-9017-5-git-send-email-p.zabel@pengutronix.de>
Download mbox | patch
Permalink /patch/231232/
State New
Headers show

Comments

Philipp Zabel - March 26, 2013, 2:13 p.m.
Query silicon revision to determine clock tree and add post
dividers for newer revisions.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 arch/arm/mach-imx/clk-imx6q.c | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

Patch

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 2f9ff93..fbab4a9 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -22,6 +22,7 @@ 
 
 #include "clk.h"
 #include "common.h"
+#include "hardware.h"
 
 #define CCGR0				0x68
 #define CCGR1				0x6c
@@ -109,29 +110,32 @@  static const char *periph_clk2_sels[]	= { "pll3_usb_otg", "osc", };
 static const char *periph_sels[]	= { "periph_pre", "periph_clk2", };
 static const char *periph2_sels[]	= { "periph2_pre", "periph2_clk2", };
 static const char *axi_sels[]		= { "periph", "pll2_pfd2_396m", "pll3_pfd1_540m", };
-static const char *audio_sels[]	= { "pll4_audio", "pll3_pfd2_508m", "pll3_pfd3_454m", "pll3_usb_otg", };
+static const char *audio_sels[]	= { "pll4_test_div", "pll3_pfd2_508m", "pll3_pfd3_454m", "pll3_usb_otg", };
 static const char *gpu_axi_sels[]	= { "axi", "ahb", };
 static const char *gpu2d_core_sels[]	= { "axi", "pll3_usb_otg", "pll2_pfd0_352m", "pll2_pfd2_396m", };
 static const char *gpu3d_core_sels[]	= { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd2_396m", };
 static const char *gpu3d_shader_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd9_720m", };
 static const char *ipu_sels[]		= { "mmdc_ch0_axi", "pll2_pfd2_396m", "pll3_120m", "pll3_pfd1_540m", };
-static const char *ldb_di_sels[]	= { "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_pfd1_540m", };
-static const char *ipu_di_pre_sels[]	= { "mmdc_ch0_axi", "pll3_usb_otg", "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "pll3_pfd1_540m", };
+static const char *ldb_di_sels[]	= { "pll5_control3", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_pfd1_540m", };
+static const char *ipu_di_pre_sels[]	= { "mmdc_ch0_axi", "pll3_usb_otg", "pll5_control3", "pll2_pfd0_352m", "pll2_pfd2_396m", "pll3_pfd1_540m", };
 static const char *ipu1_di0_sels[]	= { "ipu1_di0_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", };
 static const char *ipu1_di1_sels[]	= { "ipu1_di1_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", };
 static const char *ipu2_di0_sels[]	= { "ipu2_di0_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", };
 static const char *ipu2_di1_sels[]	= { "ipu2_di1_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", };
 static const char *hsi_tx_sels[]	= { "pll3_120m", "pll2_pfd2_396m", };
 static const char *pcie_axi_sels[]	= { "axi", "ahb", };
-static const char *ssi_sels[]		= { "pll3_pfd2_508m", "pll3_pfd3_454m", "pll4_audio", };
+static const char *ssi_sels[]		= { "pll3_pfd2_508m", "pll3_pfd3_454m", "pll4_test_div", };
 static const char *usdhc_sels[]	= { "pll2_pfd2_396m", "pll2_pfd0_352m", };
 static const char *enfc_sels[]	= { "pll2_pfd0_352m", "pll2_bus", "pll3_usb_otg", "pll2_pfd2_396m", };
 static const char *emi_sels[]		= { "axi", "pll3_usb_otg", "pll2_pfd2_396m", "pll2_pfd0_352m", };
 static const char *vdo_axi_sels[]	= { "axi", "ahb", };
 static const char *vpu_axi_sels[]	= { "axi", "pll2_pfd2_396m", "pll2_pfd0_352m", };
-static const char *cko1_sels[]	= { "pll3_usb_otg", "pll2_bus", "pll1_sys", "pll5_video",
+static const char *cko1_sels[]	= { "pll3_usb_otg", "pll2_bus", "pll1_sys", "pll5_control3",
 				    "dummy", "axi", "enfc", "ipu1_di0", "ipu1_di1", "ipu2_di0",
-				    "ipu2_di1", "ahb", "ipg", "ipg_per", "ckil", "pll4_audio", };
+				    "ipu2_di1", "ahb", "ipg", "ipg_per", "ckil", "pll4_test_div", };
+
+static struct clk_div_table test_div_table[] = { { 2, 1 }, { 1, 2 }, { 0, 4 }, { 0, 0 }, };
+static struct clk_div_table control3_table[] = { { 0, 1 }, { 1, 2 }, { 3, 4 }, { 0, 0 }, };
 
 enum mx6q_clks {
 	dummy, ckil, ckih, osc, pll2_pfd0_352m, pll2_pfd1_594m, pll2_pfd2_396m,
@@ -165,7 +169,7 @@  enum mx6q_clks {
 	pll4_audio, pll5_video, pll8_mlb, pll7_usb_host, pll6_enet, ssi1_ipg,
 	ssi2_ipg, ssi3_ipg, rom, usbphy1, usbphy2, ldb_di0_div_3_5, ldb_di1_div_3_5,
 	sata_ref, sata_ref_100m, pcie_ref, pcie_ref_125m, enet_ref, usbphy1_gate,
-	usbphy2_gate, clk_max
+	usbphy2_gate, pll4_test_div, pll5_test_div, pll5_control3, clk_max
 };
 
 static struct clk *clk[clk_max];
@@ -208,6 +212,14 @@  int __init mx6q_clocks_init(void)
 	base = of_iomap(np, 0);
 	WARN_ON(!base);
 
+	/* Audio/video PLL post dividers do not work on i.MX6q revision 1.0 */
+	if (imx6q_revision() == IMX_CHIP_REVISION_1_0) {
+		test_div_table[1].div = 1;
+		test_div_table[2].div = 1;
+		control3_table[1].div = 1;
+		control3_table[2].div = 1;
+	};
+
 	/*                   type                               name         parent_name  base     div_mask */
 	clk[pll1_sys]      = imx_clk_pllv3(IMX_PLLV3_SYS,	"pll1_sys",	"osc", base,        0x7f);
 	clk[pll2_bus]      = imx_clk_pllv3(IMX_PLLV3_GENERIC,	"pll2_bus",	"osc", base + 0x30, 0x1);
@@ -260,6 +272,10 @@  int __init mx6q_clocks_init(void)
 	clk[pll3_60m]  = imx_clk_fixed_factor("pll3_60m",  "pll3_usb_otg",   1, 8);
 	clk[twd]       = imx_clk_fixed_factor("twd",       "arm",            1, 2);
 
+	clk[pll4_test_div] = clk_register_divider_table(NULL, "pll4_test_div", "pll4_audio", CLK_SET_RATE_PARENT, base + 0x70, 19, 2, 0, test_div_table, NULL);
+	clk[pll5_test_div] = clk_register_divider_table(NULL, "pll5_test_div", "pll5_video", CLK_SET_RATE_PARENT, base + 0xa0, 19, 2, 0, test_div_table, NULL);
+	clk[pll5_control3] = clk_register_divider_table(NULL, "pll5_control3", "pll5_test_div", CLK_SET_RATE_PARENT, base + 0x170, 30, 2, 0, control3_table, NULL);
+
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-ccm");
 	base = of_iomap(np, 0);
 	WARN_ON(!base);