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Date: Thu, 4 Jan 2018 01:09:21 +0800
From: Anson Huang <Anson.Huang@....com>
To: <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
CC: <sboyd@...eaurora.org>, <mturquette@...libre.com>,
<fabio.estevam@....com>, <kernel@...gutronix.de>,
<shawnguo@...nel.org>
Subject: [PATCH] clk: imx: imx7d: correct video pll clock tree
There is a test divider and post divider in video PLL,
test divider is placed before post divider, all clocks
that can select parent from video PLL should be from
post divider, NOT from pll_video_main, below are
clock tree dump before and after this patch:
Before:
pll_video_main
pll_video_main_bypass
pll_video_main_clk
lcdif_pixel_src
lcdif_pixel_cg
lcdif_pixel_pre_div
lcdif_pixel_post_div
lcdif_pixel_root_clk
After:
pll_video_main
pll_video_main_bypass
pll_video_main_clk
pll_video_test_div
pll_video_post_div
lcdif_pixel_src
lcdif_pixel_cg
lcdif_pixel_pre_div
lcdif_pixel_post_div
lcdif_pixel_root_clk
Signed-off-by: Anson Huang <Anson.Huang@....com>
---
drivers/clk/imx/clk-imx7d.c | 84 ++++++++++++++++++++++++---------------------
1 file changed, 44 insertions(+), 40 deletions(-)
diff --git a/drivers/clk/imx/clk-imx7d.c b/drivers/clk/imx/clk-imx7d.c
index 80dc211..992938b 100644
--- a/drivers/clk/imx/clk-imx7d.c
+++ b/drivers/clk/imx/clk-imx7d.c
@@ -51,20 +51,20 @@
static const char *arm_m4_sel[] = { "osc", "pll_sys_main_240m_clk",
"pll_enet_250m_clk", "pll_sys_pfd2_270m_clk",
- "pll_dram_533m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_dram_533m_clk", "pll_audio_post_div", "pll_video_post_div",
"pll_usb_main_clk", };
static const char *axi_sel[] = { "osc", "pll_sys_pfd1_332m_clk",
"pll_dram_533m_clk", "pll_enet_250m_clk", "pll_sys_pfd5_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_sys_pfd7_clk", };
+ "pll_audio_post_div", "pll_video_post_div", "pll_sys_pfd7_clk", };
static const char *disp_axi_sel[] = { "osc", "pll_sys_pfd1_332m_clk",
"pll_dram_533m_clk", "pll_enet_250m_clk", "pll_sys_pfd6_clk",
- "pll_sys_pfd7_clk", "pll_audio_post_div", "pll_video_main_clk", };
+ "pll_sys_pfd7_clk", "pll_audio_post_div", "pll_video_post_div", };
static const char *enet_axi_sel[] = { "osc", "pll_sys_pfd2_270m_clk",
"pll_dram_533m_clk", "pll_enet_250m_clk",
- "pll_sys_main_240m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_sys_main_240m_clk", "pll_audio_post_div", "pll_video_post_div",
"pll_sys_pfd4_clk", };
static const char *nand_usdhc_bus_sel[] = { "osc", "pll_sys_pfd2_270m_clk",
@@ -75,7 +75,7 @@
static const char *ahb_channel_sel[] = { "osc", "pll_sys_pfd2_270m_clk",
"pll_dram_533m_clk", "pll_sys_pfd0_392m_clk",
"pll_enet_125m_clk", "pll_usb_main_clk", "pll_audio_post_div",
- "pll_video_main_clk", };
+ "pll_video_post_div", };
static const char *dram_phym_sel[] = { "pll_dram_main_clk",
"dram_phym_alt_clk", };
@@ -86,7 +86,7 @@
static const char *dram_phym_alt_sel[] = { "osc", "pll_dram_533m_clk",
"pll_sys_main_clk", "pll_enet_500m_clk",
"pll_usb_main_clk", "pll_sys_pfd7_clk", "pll_audio_post_div",
- "pll_video_main_clk", };
+ "pll_video_post_div", };
static const char *dram_alt_sel[] = { "osc", "pll_dram_533m_clk",
"pll_sys_main_clk", "pll_enet_500m_clk",
@@ -108,62 +108,62 @@
static const char *epdc_pixel_sel[] = { "osc", "pll_sys_pfd1_332m_clk",
"pll_dram_533m_clk", "pll_sys_main_clk", "pll_sys_pfd5_clk",
- "pll_sys_pfd6_clk", "pll_sys_pfd7_clk", "pll_video_main_clk", };
+ "pll_sys_pfd6_clk", "pll_sys_pfd7_clk", "pll_video_post_div", };
static const char *lcdif_pixel_sel[] = { "osc", "pll_sys_pfd5_clk",
"pll_dram_533m_clk", "ext_clk_3", "pll_sys_pfd4_clk",
- "pll_sys_pfd2_270m_clk", "pll_video_main_clk",
+ "pll_sys_pfd2_270m_clk", "pll_video_post_div",
"pll_usb_main_clk", };
static const char *mipi_dsi_sel[] = { "osc", "pll_sys_pfd5_clk",
"pll_sys_pfd3_clk", "pll_sys_main_clk", "pll_sys_pfd0_196m_clk",
- "pll_dram_533m_clk", "pll_video_main_clk", "pll_audio_post_div", };
+ "pll_dram_533m_clk", "pll_video_post_div", "pll_audio_post_div", };
static const char *mipi_csi_sel[] = { "osc", "pll_sys_pfd4_clk",
"pll_sys_pfd3_clk", "pll_sys_main_clk", "pll_sys_pfd0_196m_clk",
- "pll_dram_533m_clk", "pll_video_main_clk", "pll_audio_post_div", };
+ "pll_dram_533m_clk", "pll_video_post_div", "pll_audio_post_div", };
static const char *mipi_dphy_sel[] = { "osc", "pll_sys_main_120m_clk",
"pll_dram_533m_clk", "pll_sys_pfd5_clk", "ref_1m_clk", "ext_clk_2",
- "pll_video_main_clk", "ext_clk_3", };
+ "pll_video_post_div", "ext_clk_3", };
static const char *sai1_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
- "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_main_clk",
+ "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_post_div",
"pll_sys_pfd4_clk", "pll_enet_125m_clk", "ext_clk_2", };
static const char *sai2_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
- "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_main_clk",
+ "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_post_div",
"pll_sys_pfd4_clk", "pll_enet_125m_clk", "ext_clk_2", };
static const char *sai3_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
- "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_main_clk",
+ "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_post_div",
"pll_sys_pfd4_clk", "pll_enet_125m_clk", "ext_clk_3", };
static const char *spdif_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
- "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_main_clk",
+ "pll_audio_post_div", "pll_dram_533m_clk", "pll_video_post_div",
"pll_sys_pfd4_clk", "pll_enet_125m_clk", "ext_3_clk", };
static const char *enet1_ref_sel[] = { "osc", "pll_enet_125m_clk",
"pll_enet_50m_clk", "pll_enet_25m_clk",
- "pll_sys_main_120m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_sys_main_120m_clk", "pll_audio_post_div", "pll_video_post_div",
"ext_clk_4", };
static const char *enet1_time_sel[] = { "osc", "pll_enet_100m_clk",
"pll_audio_post_div", "ext_clk_1", "ext_clk_2", "ext_clk_3",
- "ext_clk_4", "pll_video_main_clk", };
+ "ext_clk_4", "pll_video_post_div", };
static const char *enet2_ref_sel[] = { "osc", "pll_enet_125m_clk",
"pll_enet_50m_clk", "pll_enet_25m_clk",
- "pll_sys_main_120m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_sys_main_120m_clk", "pll_audio_post_div", "pll_video_post_div",
"ext_clk_4", };
static const char *enet2_time_sel[] = { "osc", "pll_enet_100m_clk",
"pll_audio_post_div", "ext_clk_1", "ext_clk_2", "ext_clk_3",
- "ext_clk_4", "pll_video_main_clk", };
+ "ext_clk_4", "pll_video_post_div", };
static const char *enet_phy_ref_sel[] = { "osc", "pll_enet_25m_clk",
"pll_enet_50m_clk", "pll_enet_125m_clk",
- "pll_dram_533m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_dram_533m_clk", "pll_audio_post_div", "pll_video_post_div",
"pll_sys_pfd3_clk", };
static const char *eim_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
@@ -174,7 +174,7 @@
static const char *nand_sel[] = { "osc", "pll_sys_main_clk",
"pll_dram_533m_clk", "pll_sys_pfd0_392m_clk", "pll_sys_pfd3_clk",
"pll_enet_500m_clk", "pll_enet_250m_clk",
- "pll_video_main_clk", };
+ "pll_video_post_div", };
static const char *qspi_sel[] = { "osc", "pll_sys_pfd4_clk",
"pll_dram_533m_clk", "pll_enet_500m_clk", "pll_sys_pfd3_clk",
@@ -204,22 +204,22 @@
static const char *i2c1_sel[] = { "osc", "pll_sys_main_120m_clk",
"pll_enet_50m_clk", "pll_dram_533m_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_usb_main_clk",
+ "pll_audio_post_div", "pll_video_post_div", "pll_usb_main_clk",
"pll_sys_pfd2_135m_clk", };
static const char *i2c2_sel[] = { "osc", "pll_sys_main_120m_clk",
"pll_enet_50m_clk", "pll_dram_533m_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_usb_main_clk",
+ "pll_audio_post_div", "pll_video_post_div", "pll_usb_main_clk",
"pll_sys_pfd2_135m_clk", };
static const char *i2c3_sel[] = { "osc", "pll_sys_main_120m_clk",
"pll_enet_50m_clk", "pll_dram_533m_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_usb_main_clk",
+ "pll_audio_post_div", "pll_video_post_div", "pll_usb_main_clk",
"pll_sys_pfd2_135m_clk", };
static const char *i2c4_sel[] = { "osc", "pll_sys_main_120m_clk",
"pll_enet_50m_clk", "pll_dram_533m_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_usb_main_clk",
+ "pll_audio_post_div", "pll_video_post_div", "pll_usb_main_clk",
"pll_sys_pfd2_135m_clk", };
static const char *uart1_sel[] = { "osc", "pll_sys_main_240m_clk",
@@ -279,27 +279,27 @@
static const char *pwm1_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_1", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_1", "ref_1m_clk", "pll_video_post_div", };
static const char *pwm2_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_1", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_1", "ref_1m_clk", "pll_video_post_div", };
static const char *pwm3_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_2", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_2", "ref_1m_clk", "pll_video_post_div", };
static const char *pwm4_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_2", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_2", "ref_1m_clk", "pll_video_post_div", };
static const char *flextimer1_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_3", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_3", "ref_1m_clk", "pll_video_post_div", };
static const char *flextimer2_sel[] = { "osc", "pll_enet_100m_clk",
"pll_sys_main_120m_clk", "pll_enet_40m_clk", "pll_audio_post_div",
- "ext_clk_3", "ref_1m_clk", "pll_video_main_clk", };
+ "ext_clk_3", "ref_1m_clk", "pll_video_post_div", };
static const char *sim1_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
"pll_sys_main_120m_clk", "pll_dram_533m_clk",
@@ -308,23 +308,23 @@
static const char *sim2_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
"pll_sys_main_120m_clk", "pll_dram_533m_clk",
- "pll_usb_main_clk", "pll_video_main_clk", "pll_enet_125m_clk",
+ "pll_usb_main_clk", "pll_video_post_div", "pll_enet_125m_clk",
"pll_sys_pfd7_clk", };
static const char *gpt1_sel[] = { "osc", "pll_enet_100m_clk",
- "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_main_clk",
+ "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_post_div",
"ref_1m_clk", "pll_audio_post_div", "ext_clk_1", };
static const char *gpt2_sel[] = { "osc", "pll_enet_100m_clk",
- "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_main_clk",
+ "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_post_div",
"ref_1m_clk", "pll_audio_post_div", "ext_clk_2", };
static const char *gpt3_sel[] = { "osc", "pll_enet_100m_clk",
- "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_main_clk",
+ "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_post_div",
"ref_1m_clk", "pll_audio_post_div", "ext_clk_3", };
static const char *gpt4_sel[] = { "osc", "pll_enet_100m_clk",
- "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_main_clk",
+ "pll_sys_pfd0_392m_clk", "pll_enet_40m_clk", "pll_video_post_div",
"ref_1m_clk", "pll_audio_post_div", "ext_clk_4", };
static const char *trace_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
@@ -339,12 +339,12 @@
static const char *csi_mclk_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
"pll_sys_main_120m_clk", "pll_dram_533m_clk",
- "pll_enet_125m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_enet_125m_clk", "pll_audio_post_div", "pll_video_post_div",
"pll_usb_main_clk", };
static const char *audio_mclk_sel[] = { "osc", "pll_sys_pfd2_135m_clk",
"pll_sys_main_120m_clk", "pll_dram_533m_clk",
- "pll_enet_125m_clk", "pll_audio_post_div", "pll_video_main_clk",
+ "pll_enet_125m_clk", "pll_audio_post_div", "pll_video_post_div",
"pll_usb_main_clk", };
static const char *wrclk_sel[] = { "osc", "pll_enet_40m_clk",
@@ -358,13 +358,13 @@
static const char *clko2_sel[] = { "osc", "pll_sys_main_240m_clk",
"pll_sys_pfd0_392m_clk", "pll_sys_pfd1_166m_clk", "pll_sys_pfd4_clk",
- "pll_audio_post_div", "pll_video_main_clk", "ckil", };
+ "pll_audio_post_div", "pll_video_post_div", "ckil", };
static const char *lvds1_sel[] = { "pll_arm_main_clk",
"pll_sys_main_clk", "pll_sys_pfd0_392m_clk", "pll_sys_pfd1_332m_clk",
"pll_sys_pfd2_270m_clk", "pll_sys_pfd3_clk", "pll_sys_pfd4_clk",
"pll_sys_pfd5_clk", "pll_sys_pfd6_clk", "pll_sys_pfd7_clk",
- "pll_audio_post_div", "pll_video_main_clk", "pll_enet_500m_clk",
+ "pll_audio_post_div", "pll_video_post_div", "pll_enet_500m_clk",
"pll_enet_250m_clk", "pll_enet_125m_clk", "pll_enet_100m_clk",
"pll_enet_50m_clk", "pll_enet_40m_clk", "pll_enet_25m_clk",
"pll_dram_main_clk", };
@@ -450,6 +450,10 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, base + 0xf0, 19, 2, 0, test_div_table, &imx_ccm_lock);
clks[IMX7D_PLL_AUDIO_POST_DIV] = clk_register_divider_table(NULL, "pll_audio_post_div", "pll_audio_test_div",
CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, base + 0xf0, 22, 2, 0, post_div_table, &imx_ccm_lock);
+ clks[IMX7D_PLL_VIDEO_TEST_DIV] = clk_register_divider_table(NULL, "pll_video_test_div", "pll_video_main_clk",
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, base + 0x130, 19, 2, 0, test_div_table, &imx_ccm_lock);
+ clks[IMX7D_PLL_VIDEO_POST_DIV] = clk_register_divider_table(NULL, "pll_video_post_div", "pll_video_test_div",
+ CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, base + 0x130, 22, 2, 0, post_div_table, &imx_ccm_lock);
clks[IMX7D_PLL_SYS_PFD0_392M_CLK] = imx_clk_pfd("pll_sys_pfd0_392m_clk", "pll_sys_main_clk", base + 0xc0, 0);
clks[IMX7D_PLL_SYS_PFD1_332M_CLK] = imx_clk_pfd("pll_sys_pfd1_332m_clk", "pll_sys_main_clk", base + 0xc0, 1);
--
1.9.1
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