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path: root/drivers/clk/meson/axg.c
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-rw-r--r--drivers/clk/meson/axg.c244
1 files changed, 209 insertions, 35 deletions
diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
index bd4dbc696b88..00ce62ad6416 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -12,7 +12,6 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/init.h>
-#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/mfd/syscon.h>
#include <linux/platform_device.h>
@@ -626,6 +625,137 @@ 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,
+ },
+};
+
+static struct clk_regmap axg_pcie_ref = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = HHI_PCIE_PLL_CNTL6,
+ .mask = 0x1,
+ .shift = 1,
+ /* skip the parent 0, reserved for debug */
+ .table = (u32[]){ 1 },
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "pcie_ref",
+ .ops = &clk_regmap_mux_ops,
+ .parent_names = (const char *[]){ "pcie_mux" },
+ .num_parents = 1,
+ .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",
@@ -779,6 +909,63 @@ static struct clk_regmap axg_sd_emmc_c_clk0 = {
},
};
+static u32 mux_table_gen_clk[] = { 0, 4, 5, 6, 7, 8,
+ 9, 10, 11, 13, 14, };
+static const char * const gen_clk_parent_names[] = {
+ "xtal", "hifi_pll", "mpll0", "mpll1", "mpll2", "mpll3",
+ "fclk_div4", "fclk_div3", "fclk_div5", "fclk_div7", "gp0_pll",
+};
+
+static struct clk_regmap axg_gen_clk_sel = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = HHI_GEN_CLK_CNTL,
+ .mask = 0xf,
+ .shift = 12,
+ .table = mux_table_gen_clk,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "gen_clk_sel",
+ .ops = &clk_regmap_mux_ops,
+ /*
+ * bits 15:12 selects from 14 possible parents:
+ * xtal, [rtc_oscin_i], [sys_cpu_div16], [ddr_dpll_pt],
+ * hifi_pll, mpll0, mpll1, mpll2, mpll3, fdiv4,
+ * fdiv3, fdiv5, [cts_msr_clk], fdiv7, gp0_pll
+ */
+ .parent_names = gen_clk_parent_names,
+ .num_parents = ARRAY_SIZE(gen_clk_parent_names),
+ },
+};
+
+static struct clk_regmap axg_gen_clk_div = {
+ .data = &(struct clk_regmap_div_data){
+ .offset = HHI_GEN_CLK_CNTL,
+ .shift = 0,
+ .width = 11,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "gen_clk_div",
+ .ops = &clk_regmap_divider_ops,
+ .parent_names = (const char *[]){ "gen_clk_sel" },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap axg_gen_clk = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = HHI_GEN_CLK_CNTL,
+ .bit_idx = 7,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "gen_clk",
+ .ops = &clk_regmap_gate_ops,
+ .parent_names = (const char *[]){ "gen_clk_div" },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
/* Everything Else (EE) domain gates */
static MESON_GATE(axg_ddr, HHI_GCLK_MPEG0, 0);
static MESON_GATE(axg_audio_locker, HHI_GCLK_MPEG0, 2);
@@ -821,6 +1008,7 @@ 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 */
@@ -910,6 +1098,15 @@ 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,
+ [CLKID_GEN_CLK_SEL] = &axg_gen_clk_sel.hw,
+ [CLKID_GEN_CLK_DIV] = &axg_gen_clk_div.hw,
+ [CLKID_GEN_CLK] = &axg_gen_clk.hw,
[NR_CLKS] = NULL,
},
.num = NR_CLKS,
@@ -988,6 +1185,15 @@ 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,
+ &axg_gen_clk_sel,
+ &axg_gen_clk_div,
+ &axg_gen_clk,
};
static const struct of_device_id clkc_match_table[] = {
@@ -995,49 +1201,17 @@ static const struct of_device_id clkc_match_table[] = {
{}
};
-static const struct regmap_config clkc_regmap_config = {
- .reg_bits = 32,
- .val_bits = 32,
- .reg_stride = 4,
-};
-
static int axg_clkc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct resource *res;
- void __iomem *clk_base = NULL;
struct regmap *map;
int ret, i;
/* Get the hhi system controller node if available */
map = syscon_node_to_regmap(of_get_parent(dev->of_node));
if (IS_ERR(map)) {
- dev_err(dev,
- "failed to get HHI regmap - Trying obsolete regs\n");
-
- /*
- * FIXME: HHI registers should be accessed through
- * the appropriate system controller. This is required because
- * there is more than just clocks in this register space
- *
- * This fallback method is only provided temporarily until
- * all the platform DTs are properly using the syscon node
- */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EINVAL;
-
-
- clk_base = devm_ioremap(dev, res->start, resource_size(res));
- if (!clk_base) {
- dev_err(dev, "Unable to map clk base\n");
- return -ENXIO;
- }
-
- map = devm_regmap_init_mmio(dev, clk_base,
- &clkc_regmap_config);
- if (IS_ERR(map))
- return PTR_ERR(map);
+ dev_err(dev, "failed to get HHI regmap\n");
+ return PTR_ERR(map);
}
/* Populate regmap for the regmap backed clocks */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.