Query silicon revision to determine clock tree and add post
dividers for newer revisions.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
Changes since v2:
- Renamed pll[45]_test_div to pll[45]_post_div
- Renamed pll5_control3 to pll5_video_div
- Reformatted clk_div_tables
- Added missing imx_ccm_lock
- Added clocks to device tree bindings documentation
---
.../devicetree/bindings/clock/imx6q-clock.txt | 3 ++
arch/arm/mach-imx/clk-imx6q.c | 42 ++++++++++++++++++----
2 files changed, 38 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/clock/imx6q-clock.txt
b/Documentation/devicetree/bindings/clock/imx6q-clock.txt
index 969b38e..6deb6fd 100644
--- a/Documentation/devicetree/bindings/clock/imx6q-clock.txt
+++ b/Documentation/devicetree/bindings/clock/imx6q-clock.txt
@@ -205,6 +205,9 @@ clocks and IDs.
enet_ref 190
usbphy1_gate 191
usbphy2_gate 192
+ pll4_post_div 193
+ pll5_post_div 194
+ pll5_video_div 195
Examples:
diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 4b0cab4..9c6a08e 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 +110,29 @@ 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_post_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_video_div", "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_div", "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_post_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_video_div",
"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_post_div", };
enum mx6q_clks {
dummy, ckil, ckih, osc, pll2_pfd0_352m, pll2_pfd1_594m, pll2_pfd2_396m,
@@ -165,7 +166,7 @@ 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_post_div, pll5_post_div, pll5_video_div, clk_max
};
static struct clk *clk[clk_max];
@@ -182,6 +183,21 @@ static struct clk_div_table clk_enet_ref_table[] = {
{ .val = 3, .div = 4, },
};
+static struct clk_div_table post_div_table[] = {
+ { .val = 2, .div = 1, },
+ { .val = 1, .div = 2, },
+ { .val = 0, .div = 4, },
+ { }
+};
+
+static struct clk_div_table video_div_table[] = {
+ { .val = 0, .div = 1, },
+ { .val = 1, .div = 2, },
+ { .val = 2, .div = 1, },
+ { .val = 3, .div = 4, },
+ { }
+};
+
int __init mx6q_clocks_init(void)
{
struct device_node *np;
@@ -208,6 +224,14 @@ 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) {
+ post_div_table[1].div = 1;
+ post_div_table[2].div = 1;
+ video_div_table[1].div = 1;
+ video_div_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 +284,10 @@ 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_post_div] = clk_register_divider_table(NULL, "pll4_post_div",
"pll4_audio", CLK_SET_RATE_PARENT, base + 0x70, 19, 2, 0, post_div_table,
&imx_ccm_lock);
+ clk[pll5_post_div] = clk_register_divider_table(NULL, "pll5_post_div",
"pll5_video", CLK_SET_RATE_PARENT, base + 0xa0, 19, 2, 0, post_div_table,
&imx_ccm_lock);
+ clk[pll5_video_div] = clk_register_divider_table(NULL,
"pll5_video_div", "pll5_post_div", CLK_SET_RATE_PARENT, base + 0x170, 30, 2, 0,
video_div_table, &imx_ccm_lock);
+
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-ccm");
base = of_iomap(np, 0);
WARN_ON(!base);
--
1.8.2.rc2
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