lkml.org 
[lkml]   [2018]   [Jul]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 2/2] clk: meson-axg: add clocks required by pcie driver
Date
Adding clocks for the pcie driver. Due to the ASIC design,
the pcie controller re-use part of the mipi clock logic,
so the mipi clock is also added.

Tested-by: Jianxin Qin <jianxin.qin@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
---
drivers/clk/meson/axg.c | 148 ++++++++++++++++++++++++++++++++++++++++
drivers/clk/meson/axg.h | 6 +-
2 files changed, 153 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
index 3fb884db1b10..aa7de8752231 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -625,6 +625,140 @@ static struct clk_regmap axg_mpll3 = {
},
};

+static const struct pll_rate_table axg_pcie_pll_rate_table[] = {
+ {
+ .rate = 100000000,
+ .m = 200,
+ .n = 3,
+ .od = 1,
+ .od2 = 3,
+ },
+ { /* sentinel */ },
+};
+
+static const struct reg_sequence axg_pcie_init_regs[] = {
+ { .reg = HHI_PCIE_PLL_CNTL, .def = 0x400106c8 },
+ { .reg = HHI_PCIE_PLL_CNTL1, .def = 0x0084a2aa },
+ { .reg = HHI_PCIE_PLL_CNTL2, .def = 0xb75020be },
+ { .reg = HHI_PCIE_PLL_CNTL3, .def = 0x0a47488e },
+ { .reg = HHI_PCIE_PLL_CNTL4, .def = 0xc000004d },
+ { .reg = HHI_PCIE_PLL_CNTL5, .def = 0x00078000 },
+ { .reg = HHI_PCIE_PLL_CNTL6, .def = 0x002323c6 },
+};
+
+static struct clk_regmap axg_pcie_pll = {
+ .data = &(struct meson_clk_pll_data){
+ .m = {
+ .reg_off = HHI_PCIE_PLL_CNTL,
+ .shift = 0,
+ .width = 9,
+ },
+ .n = {
+ .reg_off = HHI_PCIE_PLL_CNTL,
+ .shift = 9,
+ .width = 5,
+ },
+ .od = {
+ .reg_off = HHI_PCIE_PLL_CNTL,
+ .shift = 16,
+ .width = 2,
+ },
+ .od2 = {
+ .reg_off = HHI_PCIE_PLL_CNTL6,
+ .shift = 6,
+ .width = 2,
+ },
+ .frac = {
+ .reg_off = HHI_PCIE_PLL_CNTL1,
+ .shift = 0,
+ .width = 12,
+ },
+ .l = {
+ .reg_off = HHI_PCIE_PLL_CNTL,
+ .shift = 31,
+ .width = 1,
+ },
+ .rst = {
+ .reg_off = HHI_PCIE_PLL_CNTL,
+ .shift = 29,
+ .width = 1,
+ },
+ .table = axg_pcie_pll_rate_table,
+ .init_regs = axg_pcie_init_regs,
+ .init_count = ARRAY_SIZE(axg_pcie_init_regs),
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "pcie_pll",
+ .ops = &meson_clk_pll_ops,
+ .parent_names = (const char *[]){ "xtal" },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap axg_pcie_mux = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = HHI_PCIE_PLL_CNTL6,
+ .mask = 0x1,
+ .shift = 2,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "pcie_mux",
+ .ops = &clk_regmap_mux_ops,
+ .parent_names = (const char *[]){ "mpll3", "pcie_pll" },
+ .num_parents = 2,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+/* skip the partent 0, it's for debug only */
+static u32 mux_table_pcie_ref[] = { 1 };
+static const char * const pcie_ref_parent_names[] = { "pcie_mux" };
+
+static struct clk_regmap axg_pcie_ref = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = HHI_PCIE_PLL_CNTL6,
+ .mask = 0x1,
+ .shift = 1,
+ .table = mux_table_pcie_ref,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "pcie_ref",
+ .ops = &clk_regmap_mux_ops,
+ .parent_names = pcie_ref_parent_names,
+ .num_parents = ARRAY_SIZE(pcie_ref_parent_names),
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap axg_pcie_cml_en0 = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = HHI_PCIE_PLL_CNTL6,
+ .bit_idx = 4,
+ },
+ .hw.init = &(struct clk_init_data) {
+ .name = "pcie_cml_en0",
+ .ops = &clk_regmap_gate_ops,
+ .parent_names = (const char *[]){ "pcie_ref" },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+
+ },
+};
+
+static struct clk_regmap axg_pcie_cml_en1 = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = HHI_PCIE_PLL_CNTL6,
+ .bit_idx = 3,
+ },
+ .hw.init = &(struct clk_init_data) {
+ .name = "pcie_cml_en1",
+ .ops = &clk_regmap_gate_ops,
+ .parent_names = (const char *[]){ "pcie_ref" },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
static u32 mux_table_clk81[] = { 0, 2, 3, 4, 5, 6, 7 };
static const char * const clk81_parent_names[] = {
"xtal", "fclk_div7", "mpll1", "mpll2", "fclk_div4",
@@ -820,6 +954,7 @@ static MESON_GATE(axg_mmc_pclk, HHI_GCLK_MPEG2, 11);
static MESON_GATE(axg_vpu_intr, HHI_GCLK_MPEG2, 25);
static MESON_GATE(axg_sec_ahb_ahb3_bridge, HHI_GCLK_MPEG2, 26);
static MESON_GATE(axg_gic, HHI_GCLK_MPEG2, 30);
+static MESON_GATE(axg_mipi_enable, HHI_MIPI_CNTL0, 29);

/* Always On (AO) domain gates */

@@ -909,6 +1044,13 @@ static struct clk_hw_onecell_data axg_hw_onecell_data = {
[CLKID_FCLK_DIV4_DIV] = &axg_fclk_div4_div.hw,
[CLKID_FCLK_DIV5_DIV] = &axg_fclk_div5_div.hw,
[CLKID_FCLK_DIV7_DIV] = &axg_fclk_div7_div.hw,
+ [CLKID_PCIE_PLL] = &axg_pcie_pll.hw,
+ [CLKID_PCIE_MUX] = &axg_pcie_mux.hw,
+ [CLKID_PCIE_REF] = &axg_pcie_ref.hw,
+ [CLKID_PCIE_CML_EN0] = &axg_pcie_cml_en0.hw,
+ [CLKID_PCIE_CML_EN1] = &axg_pcie_cml_en1.hw,
+ [CLKID_MIPI_ENABLE] = &axg_mipi_enable.hw,
+
[NR_CLKS] = NULL,
},
.num = NR_CLKS,
@@ -987,6 +1129,12 @@ static struct clk_regmap *const axg_clk_regmaps[] = {
&axg_fclk_div4,
&axg_fclk_div5,
&axg_fclk_div7,
+ &axg_pcie_pll,
+ &axg_pcie_mux,
+ &axg_pcie_ref,
+ &axg_pcie_cml_en0,
+ &axg_pcie_cml_en1,
+ &axg_mipi_enable,
};

static const struct of_device_id clkc_match_table[] = {
diff --git a/drivers/clk/meson/axg.h b/drivers/clk/meson/axg.h
index b421df6a7ea0..6e55ebd6c77d 100644
--- a/drivers/clk/meson/axg.h
+++ b/drivers/clk/meson/axg.h
@@ -16,6 +16,7 @@
* Register offsets from the data sheet must be multiplied by 4 before
* adding them to the base address to get the right value.
*/
+#define HHI_MIPI_CNTL0 0x00
#define HHI_GP0_PLL_CNTL 0x40
#define HHI_GP0_PLL_CNTL2 0x44
#define HHI_GP0_PLL_CNTL3 0x48
@@ -127,8 +128,11 @@
#define CLKID_FCLK_DIV4_DIV 73
#define CLKID_FCLK_DIV5_DIV 74
#define CLKID_FCLK_DIV7_DIV 75
+#define CLKID_PCIE_PLL 76
+#define CLKID_PCIE_MUX 77
+#define CLKID_PCIE_REF 78

-#define NR_CLKS 76
+#define NR_CLKS 82

/* include the CLKIDs that have been made part of the DT binding */
#include <dt-bindings/clock/axg-clkc.h>
--
2.18.0
\
 
 \ /
  Last update: 2018-07-02 15:35    [W:0.098 / U:5.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site