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clk: meson: g12a: Add support for NNA CLK source clocks

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This adds the Neural Network Accelerator source clocks hierarchy, it's
2 simple composite clocks to feed the AXI interface and the Core of
the Neural Network Accelerator IP.

This IP is only present on the Amlogic SM1 SoCs family.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20200610083012.5024-3-narmstrong@baylibre.com
This commit is contained in:
Dmitry Shmidt 2020-06-10 10:30:12 +02:00 committed by Jerome Brunet
parent df06230106
commit 2f1efa5340
2 changed files with 125 additions and 1 deletions
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119
drivers/clk/meson/g12a.c
View File

@ -3981,6 +3981,113 @@ static struct clk_regmap g12a_spicc1_sclk = {
},
};
/* Neural Network Accelerator source clock */
static const struct clk_parent_data nna_clk_parent_data[] = {
{ .fw_name = "xtal", },
{ .hw = &g12a_gp0_pll.hw, },
{ .hw = &g12a_hifi_pll.hw, },
{ .hw = &g12a_fclk_div2p5.hw, },
{ .hw = &g12a_fclk_div3.hw, },
{ .hw = &g12a_fclk_div4.hw, },
{ .hw = &g12a_fclk_div5.hw, },
{ .hw = &g12a_fclk_div7.hw },
};
static struct clk_regmap sm1_nna_axi_clk_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_NNA_CLK_CNTL,
.mask = 7,
.shift = 9,
},
.hw.init = &(struct clk_init_data){
.name = "nna_axi_clk_sel",
.ops = &clk_regmap_mux_ops,
.parent_data = nna_clk_parent_data,
.num_parents = ARRAY_SIZE(nna_clk_parent_data),
},
};
static struct clk_regmap sm1_nna_axi_clk_div = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_NNA_CLK_CNTL,
.shift = 0,
.width = 7,
},
.hw.init = &(struct clk_init_data){
.name = "nna_axi_clk_div",
.ops = &clk_regmap_divider_ops,
.parent_hws = (const struct clk_hw *[]) {
&sm1_nna_axi_clk_sel.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap sm1_nna_axi_clk = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_NNA_CLK_CNTL,
.bit_idx = 8,
},
.hw.init = &(struct clk_init_data){
.name = "nna_axi_clk",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&sm1_nna_axi_clk_div.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap sm1_nna_core_clk_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_NNA_CLK_CNTL,
.mask = 7,
.shift = 25,
},
.hw.init = &(struct clk_init_data){
.name = "nna_core_clk_sel",
.ops = &clk_regmap_mux_ops,
.parent_data = nna_clk_parent_data,
.num_parents = ARRAY_SIZE(nna_clk_parent_data),
},
};
static struct clk_regmap sm1_nna_core_clk_div = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_NNA_CLK_CNTL,
.shift = 16,
.width = 7,
},
.hw.init = &(struct clk_init_data){
.name = "nna_core_clk_div",
.ops = &clk_regmap_divider_ops,
.parent_hws = (const struct clk_hw *[]) {
&sm1_nna_core_clk_sel.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap sm1_nna_core_clk = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_NNA_CLK_CNTL,
.bit_idx = 24,
},
.hw.init = &(struct clk_init_data){
.name = "nna_core_clk",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&sm1_nna_core_clk_div.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
#define MESON_GATE(_name, _reg, _bit) \
MESON_PCLK(_name, _reg, _bit, &g12a_clk81.hw)
@ -4779,6 +4886,12 @@ static struct clk_hw_onecell_data sm1_hw_onecell_data = {
[CLKID_SPICC1_SCLK_SEL] = &g12a_spicc1_sclk_sel.hw,
[CLKID_SPICC1_SCLK_DIV] = &g12a_spicc1_sclk_div.hw,
[CLKID_SPICC1_SCLK] = &g12a_spicc1_sclk.hw,
[CLKID_NNA_AXI_CLK_SEL] = &sm1_nna_axi_clk_sel.hw,
[CLKID_NNA_AXI_CLK_DIV] = &sm1_nna_axi_clk_div.hw,
[CLKID_NNA_AXI_CLK] = &sm1_nna_axi_clk.hw,
[CLKID_NNA_CORE_CLK_SEL] = &sm1_nna_core_clk_sel.hw,
[CLKID_NNA_CORE_CLK_DIV] = &sm1_nna_core_clk_div.hw,
[CLKID_NNA_CORE_CLK] = &sm1_nna_core_clk.hw,
[NR_CLKS] = NULL,
},
.num = NR_CLKS,
@ -5020,6 +5133,12 @@ static struct clk_regmap *const g12a_clk_regmaps[] = {
&g12a_spicc1_sclk_sel,
&g12a_spicc1_sclk_div,
&g12a_spicc1_sclk,
&sm1_nna_axi_clk_sel,
&sm1_nna_axi_clk_div,
&sm1_nna_axi_clk,
&sm1_nna_core_clk_sel,
&sm1_nna_core_clk_div,
&sm1_nna_core_clk,
};
static const struct reg_sequence g12a_init_regs[] = {

7
drivers/clk/meson/g12a.h
View File

@ -70,6 +70,7 @@
#define HHI_MALI_CLK_CNTL 0x1b0
#define HHI_VPU_CLKC_CNTL 0x1b4
#define HHI_VPU_CLK_CNTL 0x1bC
#define HHI_NNA_CLK_CNTL 0x1C8
#define HHI_HDMI_CLK_CNTL 0x1CC
#define HHI_VDEC_CLK_CNTL 0x1E0
#define HHI_VDEC2_CLK_CNTL 0x1E4
@ -259,8 +260,12 @@
#define CLKID_SPICC0_SCLK_DIV 257
#define CLKID_SPICC1_SCLK_SEL 259
#define CLKID_SPICC1_SCLK_DIV 260
#define CLKID_NNA_AXI_CLK_SEL 262
#define CLKID_NNA_AXI_CLK_DIV 263
#define CLKID_NNA_CORE_CLK_SEL 265
#define CLKID_NNA_CORE_CLK_DIV 266
#define NR_CLKS 262
#define NR_CLKS 268
/* include the CLKIDs that have been made part of the DT binding */
#include <dt-bindings/clock/g12a-clkc.h>