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clk: meson: add Hardware Clock measure driver

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Amlogic SoCs embeds an hardware clock measure block, port it
from Linux and implement it as a UCLK_CLK with only the dump
op and fail-only xlate.

Based on the Linux driver introduced in [1].

[1] commit 2b45ebef39a2 ("soc: amlogic: Add Meson Clock Measure driver").

Reviewed-by: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231218-uboot-meson-clk-msr-v3-1-acf4d90ccfee@linaro.org
This commit is contained in:
Neil Armstrong 2023-12-18 10:47:55 +01:00 committed by Sean Anderson
parent 6faba41927
commit 2da1331d20
3 changed files with 645 additions and 0 deletions
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10
drivers/clk/meson/Kconfig
View File

@ -29,3 +29,13 @@ config CLK_MESON_A1
help help
Enable clock support for the Amlogic A1 SoC family, such as Enable clock support for the Amlogic A1 SoC family, such as
the A113L the A113L
config CLK_MESON_MSR
bool "Enable clock measure driver for Amlogic SoCs"
depends on CLK && ARCH_MESON
depends on CMD_CLK
default ARCH_MESON
help
Enable measuring a set of internal Amlogic SoC clock frequencies
using the Hardware Clock Measure registers and print them using
the clk dump command.

1
drivers/clk/meson/Makefile
View File

@ -9,3 +9,4 @@ obj-$(CONFIG_CLK_MESON_AXG) += axg-ao.o
obj-$(CONFIG_CLK_MESON_G12A) += g12a.o obj-$(CONFIG_CLK_MESON_G12A) += g12a.o
obj-$(CONFIG_CLK_MESON_G12A) += g12a-ao.o obj-$(CONFIG_CLK_MESON_G12A) += g12a-ao.o
obj-$(CONFIG_CLK_MESON_A1) += a1.o obj-$(CONFIG_CLK_MESON_A1) += a1.o
obj-$(CONFIG_CLK_MESON_MSR) += clk-measure.o

634
drivers/clk/meson/clk-measure.c Normal file
View File

@ -0,0 +1,634 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Based on Linux driver from:
* (C) Copyright 2018 - BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
* (C) Copyright 2023 - Neil Armstrong <neil.armstrong@linaro.org>
*/
#include <log.h>
#include <clk-uclass.h>
#include <div64.h>
#include <dm.h>
#include <time.h>
#include <regmap.h>
#include <syscon.h>
#include <linux/bitops.h>
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/kernel.h>
#define MSR_CLK_DUTY 0x0
#define MSR_CLK_REG0 0x4
#define MSR_CLK_REG1 0x8
#define MSR_CLK_REG2 0xc
#define MSR_DURATION GENMASK(15, 0)
#define MSR_ENABLE BIT(16)
#define MSR_CONT BIT(17) /* continuous measurement */
#define MSR_INTR BIT(18) /* interrupts */
#define MSR_RUN BIT(19)
#define MSR_CLK_SRC GENMASK(26, 20)
#define MSR_BUSY BIT(31)
#define MSR_VAL_MASK GENMASK(15, 0)
#define DIV_MIN 32
#define DIV_STEP 32
#define DIV_MAX 640
#define CLK_MSR_MAX 128
struct meson_msr_id {
unsigned int id;
const char *name;
};
struct meson_msr {
struct regmap *regmap;
struct meson_msr_id *msr_table;
};
#define CLK_MSR_ID(__id, __name) \
[__id] = {.id = __id, .name = __name,}
static struct meson_msr_id clk_msr_m8[CLK_MSR_MAX] = {
CLK_MSR_ID(0, "ring_osc_out_ee0"),
CLK_MSR_ID(1, "ring_osc_out_ee1"),
CLK_MSR_ID(2, "ring_osc_out_ee2"),
CLK_MSR_ID(3, "a9_ring_osck"),
CLK_MSR_ID(6, "vid_pll"),
CLK_MSR_ID(7, "clk81"),
CLK_MSR_ID(8, "encp"),
CLK_MSR_ID(9, "encl"),
CLK_MSR_ID(11, "eth_rmii"),
CLK_MSR_ID(13, "amclk"),
CLK_MSR_ID(14, "fec_clk_0"),
CLK_MSR_ID(15, "fec_clk_1"),
CLK_MSR_ID(16, "fec_clk_2"),
CLK_MSR_ID(18, "a9_clk_div16"),
CLK_MSR_ID(19, "hdmi_sys"),
CLK_MSR_ID(20, "rtc_osc_clk_out"),
CLK_MSR_ID(21, "i2s_clk_in_src0"),
CLK_MSR_ID(22, "clk_rmii_from_pad"),
CLK_MSR_ID(23, "hdmi_ch0_tmds"),
CLK_MSR_ID(24, "lvds_fifo"),
CLK_MSR_ID(26, "sc_clk_int"),
CLK_MSR_ID(28, "sar_adc"),
CLK_MSR_ID(30, "mpll_clk_test_out"),
CLK_MSR_ID(31, "audac_clkpi"),
CLK_MSR_ID(32, "vdac"),
CLK_MSR_ID(33, "sdhc_rx"),
CLK_MSR_ID(34, "sdhc_sd"),
CLK_MSR_ID(35, "mali"),
CLK_MSR_ID(36, "hdmi_tx_pixel"),
CLK_MSR_ID(38, "vdin_meas"),
CLK_MSR_ID(39, "pcm_sclk"),
CLK_MSR_ID(40, "pcm_mclk"),
CLK_MSR_ID(41, "eth_rx_tx"),
CLK_MSR_ID(42, "pwm_d"),
CLK_MSR_ID(43, "pwm_c"),
CLK_MSR_ID(44, "pwm_b"),
CLK_MSR_ID(45, "pwm_a"),
CLK_MSR_ID(46, "pcm2_sclk"),
CLK_MSR_ID(47, "ddr_dpll_pt"),
CLK_MSR_ID(48, "pwm_f"),
CLK_MSR_ID(49, "pwm_e"),
CLK_MSR_ID(59, "hcodec"),
CLK_MSR_ID(60, "usb_32k_alt"),
CLK_MSR_ID(61, "gpio"),
CLK_MSR_ID(62, "vid2_pll"),
CLK_MSR_ID(63, "mipi_csi_cfg"),
};
static struct meson_msr_id clk_msr_gx[CLK_MSR_MAX] = {
CLK_MSR_ID(0, "ring_osc_out_ee_0"),
CLK_MSR_ID(1, "ring_osc_out_ee_1"),
CLK_MSR_ID(2, "ring_osc_out_ee_2"),
CLK_MSR_ID(3, "a53_ring_osc"),
CLK_MSR_ID(4, "gp0_pll"),
CLK_MSR_ID(6, "enci"),
CLK_MSR_ID(7, "clk81"),
CLK_MSR_ID(8, "encp"),
CLK_MSR_ID(9, "encl"),
CLK_MSR_ID(10, "vdac"),
CLK_MSR_ID(11, "rgmii_tx"),
CLK_MSR_ID(12, "pdm"),
CLK_MSR_ID(13, "amclk"),
CLK_MSR_ID(14, "fec_0"),
CLK_MSR_ID(15, "fec_1"),
CLK_MSR_ID(16, "fec_2"),
CLK_MSR_ID(17, "sys_pll_div16"),
CLK_MSR_ID(18, "sys_cpu_div16"),
CLK_MSR_ID(19, "hdmitx_sys"),
CLK_MSR_ID(20, "rtc_osc_out"),
CLK_MSR_ID(21, "i2s_in_src0"),
CLK_MSR_ID(22, "eth_phy_ref"),
CLK_MSR_ID(23, "hdmi_todig"),
CLK_MSR_ID(26, "sc_int"),
CLK_MSR_ID(28, "sar_adc"),
CLK_MSR_ID(31, "mpll_test_out"),
CLK_MSR_ID(32, "vdec"),
CLK_MSR_ID(35, "mali"),
CLK_MSR_ID(36, "hdmi_tx_pixel"),
CLK_MSR_ID(37, "i958"),
CLK_MSR_ID(38, "vdin_meas"),
CLK_MSR_ID(39, "pcm_sclk"),
CLK_MSR_ID(40, "pcm_mclk"),
CLK_MSR_ID(41, "eth_rx_or_rmii"),
CLK_MSR_ID(42, "mp0_out"),
CLK_MSR_ID(43, "fclk_div5"),
CLK_MSR_ID(44, "pwm_b"),
CLK_MSR_ID(45, "pwm_a"),
CLK_MSR_ID(46, "vpu"),
CLK_MSR_ID(47, "ddr_dpll_pt"),
CLK_MSR_ID(48, "mp1_out"),
CLK_MSR_ID(49, "mp2_out"),
CLK_MSR_ID(50, "mp3_out"),
CLK_MSR_ID(51, "nand_core"),
CLK_MSR_ID(52, "sd_emmc_b"),
CLK_MSR_ID(53, "sd_emmc_a"),
CLK_MSR_ID(55, "vid_pll_div_out"),
CLK_MSR_ID(56, "cci"),
CLK_MSR_ID(57, "wave420l_c"),
CLK_MSR_ID(58, "wave420l_b"),
CLK_MSR_ID(59, "hcodec"),
CLK_MSR_ID(60, "alt_32k"),
CLK_MSR_ID(61, "gpio_msr"),
CLK_MSR_ID(62, "hevc"),
CLK_MSR_ID(66, "vid_lock"),
CLK_MSR_ID(70, "pwm_f"),
CLK_MSR_ID(71, "pwm_e"),
CLK_MSR_ID(72, "pwm_d"),
CLK_MSR_ID(73, "pwm_c"),
CLK_MSR_ID(75, "aoclkx2_int"),
CLK_MSR_ID(76, "aoclk_int"),
CLK_MSR_ID(77, "rng_ring_osc_0"),
CLK_MSR_ID(78, "rng_ring_osc_1"),
CLK_MSR_ID(79, "rng_ring_osc_2"),
CLK_MSR_ID(80, "rng_ring_osc_3"),
CLK_MSR_ID(81, "vapb"),
CLK_MSR_ID(82, "ge2d"),
};
static struct meson_msr_id clk_msr_axg[CLK_MSR_MAX] = {
CLK_MSR_ID(0, "ring_osc_out_ee_0"),
CLK_MSR_ID(1, "ring_osc_out_ee_1"),
CLK_MSR_ID(2, "ring_osc_out_ee_2"),
CLK_MSR_ID(3, "a53_ring_osc"),
CLK_MSR_ID(4, "gp0_pll"),
CLK_MSR_ID(5, "gp1_pll"),
CLK_MSR_ID(7, "clk81"),
CLK_MSR_ID(9, "encl"),
CLK_MSR_ID(17, "sys_pll_div16"),
CLK_MSR_ID(18, "sys_cpu_div16"),
CLK_MSR_ID(20, "rtc_osc_out"),
CLK_MSR_ID(23, "mmc_clk"),
CLK_MSR_ID(28, "sar_adc"),
CLK_MSR_ID(31, "mpll_test_out"),
CLK_MSR_ID(40, "mod_eth_tx_clk"),
CLK_MSR_ID(41, "mod_eth_rx_clk_rmii"),
CLK_MSR_ID(42, "mp0_out"),
CLK_MSR_ID(43, "fclk_div5"),
CLK_MSR_ID(44, "pwm_b"),
CLK_MSR_ID(45, "pwm_a"),
CLK_MSR_ID(46, "vpu"),
CLK_MSR_ID(47, "ddr_dpll_pt"),
CLK_MSR_ID(48, "mp1_out"),
CLK_MSR_ID(49, "mp2_out"),
CLK_MSR_ID(50, "mp3_out"),
CLK_MSR_ID(51, "sd_emmm_c"),
CLK_MSR_ID(52, "sd_emmc_b"),
CLK_MSR_ID(61, "gpio_msr"),
CLK_MSR_ID(66, "audio_slv_lrclk_c"),
CLK_MSR_ID(67, "audio_slv_lrclk_b"),
CLK_MSR_ID(68, "audio_slv_lrclk_a"),
CLK_MSR_ID(69, "audio_slv_sclk_c"),
CLK_MSR_ID(70, "audio_slv_sclk_b"),
CLK_MSR_ID(71, "audio_slv_sclk_a"),
CLK_MSR_ID(72, "pwm_d"),
CLK_MSR_ID(73, "pwm_c"),
CLK_MSR_ID(74, "wifi_beacon"),
CLK_MSR_ID(75, "tdmin_lb_lrcl"),
CLK_MSR_ID(76, "tdmin_lb_sclk"),
CLK_MSR_ID(77, "rng_ring_osc_0"),
CLK_MSR_ID(78, "rng_ring_osc_1"),
CLK_MSR_ID(79, "rng_ring_osc_2"),
CLK_MSR_ID(80, "rng_ring_osc_3"),
CLK_MSR_ID(81, "vapb"),
CLK_MSR_ID(82, "ge2d"),
CLK_MSR_ID(84, "audio_resample"),
CLK_MSR_ID(85, "audio_pdm_sys"),
CLK_MSR_ID(86, "audio_spdifout"),
CLK_MSR_ID(87, "audio_spdifin"),
CLK_MSR_ID(88, "audio_lrclk_f"),
CLK_MSR_ID(89, "audio_lrclk_e"),
CLK_MSR_ID(90, "audio_lrclk_d"),
CLK_MSR_ID(91, "audio_lrclk_c"),
CLK_MSR_ID(92, "audio_lrclk_b"),
CLK_MSR_ID(93, "audio_lrclk_a"),
CLK_MSR_ID(94, "audio_sclk_f"),
CLK_MSR_ID(95, "audio_sclk_e"),
CLK_MSR_ID(96, "audio_sclk_d"),
CLK_MSR_ID(97, "audio_sclk_c"),
CLK_MSR_ID(98, "audio_sclk_b"),
CLK_MSR_ID(99, "audio_sclk_a"),
CLK_MSR_ID(100, "audio_mclk_f"),
CLK_MSR_ID(101, "audio_mclk_e"),
CLK_MSR_ID(102, "audio_mclk_d"),
CLK_MSR_ID(103, "audio_mclk_c"),
CLK_MSR_ID(104, "audio_mclk_b"),
CLK_MSR_ID(105, "audio_mclk_a"),
CLK_MSR_ID(106, "pcie_refclk_n"),
CLK_MSR_ID(107, "pcie_refclk_p"),
CLK_MSR_ID(108, "audio_locker_out"),
CLK_MSR_ID(109, "audio_locker_in"),
};
static struct meson_msr_id clk_msr_g12a[CLK_MSR_MAX] = {
CLK_MSR_ID(0, "ring_osc_out_ee_0"),
CLK_MSR_ID(1, "ring_osc_out_ee_1"),
CLK_MSR_ID(2, "ring_osc_out_ee_2"),
CLK_MSR_ID(3, "sys_cpu_ring_osc"),
CLK_MSR_ID(4, "gp0_pll"),
CLK_MSR_ID(6, "enci"),
CLK_MSR_ID(7, "clk81"),
CLK_MSR_ID(8, "encp"),
CLK_MSR_ID(9, "encl"),
CLK_MSR_ID(10, "vdac"),
CLK_MSR_ID(11, "eth_tx"),
CLK_MSR_ID(12, "hifi_pll"),
CLK_MSR_ID(13, "mod_tcon"),
CLK_MSR_ID(14, "fec_0"),
CLK_MSR_ID(15, "fec_1"),
CLK_MSR_ID(16, "fec_2"),
CLK_MSR_ID(17, "sys_pll_div16"),
CLK_MSR_ID(18, "sys_cpu_div16"),
CLK_MSR_ID(19, "lcd_an_ph2"),
CLK_MSR_ID(20, "rtc_osc_out"),
CLK_MSR_ID(21, "lcd_an_ph3"),
CLK_MSR_ID(22, "eth_phy_ref"),
CLK_MSR_ID(23, "mpll_50m"),
CLK_MSR_ID(24, "eth_125m"),
CLK_MSR_ID(25, "eth_rmii"),
CLK_MSR_ID(26, "sc_int"),
CLK_MSR_ID(27, "in_mac"),
CLK_MSR_ID(28, "sar_adc"),
CLK_MSR_ID(29, "pcie_inp"),
CLK_MSR_ID(30, "pcie_inn"),
CLK_MSR_ID(31, "mpll_test_out"),
CLK_MSR_ID(32, "vdec"),
CLK_MSR_ID(33, "sys_cpu_ring_osc_1"),
CLK_MSR_ID(34, "eth_mpll_50m"),
CLK_MSR_ID(35, "mali"),
CLK_MSR_ID(36, "hdmi_tx_pixel"),
CLK_MSR_ID(37, "cdac"),
CLK_MSR_ID(38, "vdin_meas"),
CLK_MSR_ID(39, "bt656"),
CLK_MSR_ID(41, "eth_rx_or_rmii"),
CLK_MSR_ID(42, "mp0_out"),
CLK_MSR_ID(43, "fclk_div5"),
CLK_MSR_ID(44, "pwm_b"),
CLK_MSR_ID(45, "pwm_a"),
CLK_MSR_ID(46, "vpu"),
CLK_MSR_ID(47, "ddr_dpll_pt"),
CLK_MSR_ID(48, "mp1_out"),
CLK_MSR_ID(49, "mp2_out"),
CLK_MSR_ID(50, "mp3_out"),
CLK_MSR_ID(51, "sd_emmc_c"),
CLK_MSR_ID(52, "sd_emmc_b"),
CLK_MSR_ID(53, "sd_emmc_a"),
CLK_MSR_ID(54, "vpu_clkc"),
CLK_MSR_ID(55, "vid_pll_div_out"),
CLK_MSR_ID(56, "wave420l_a"),
CLK_MSR_ID(57, "wave420l_c"),
CLK_MSR_ID(58, "wave420l_b"),
CLK_MSR_ID(59, "hcodec"),
CLK_MSR_ID(61, "gpio_msr"),
CLK_MSR_ID(62, "hevcb"),
CLK_MSR_ID(63, "dsi_meas"),
CLK_MSR_ID(64, "spicc_1"),
CLK_MSR_ID(65, "spicc_0"),
CLK_MSR_ID(66, "vid_lock"),
CLK_MSR_ID(67, "dsi_phy"),
CLK_MSR_ID(68, "hdcp22_esm"),
CLK_MSR_ID(69, "hdcp22_skp"),
CLK_MSR_ID(70, "pwm_f"),
CLK_MSR_ID(71, "pwm_e"),
CLK_MSR_ID(72, "pwm_d"),
CLK_MSR_ID(73, "pwm_c"),
CLK_MSR_ID(75, "hevcf"),
CLK_MSR_ID(77, "rng_ring_osc_0"),
CLK_MSR_ID(78, "rng_ring_osc_1"),
CLK_MSR_ID(79, "rng_ring_osc_2"),
CLK_MSR_ID(80, "rng_ring_osc_3"),
CLK_MSR_ID(81, "vapb"),
CLK_MSR_ID(82, "ge2d"),
CLK_MSR_ID(83, "co_rx"),
CLK_MSR_ID(84, "co_tx"),
CLK_MSR_ID(89, "hdmi_todig"),
CLK_MSR_ID(90, "hdmitx_sys"),
CLK_MSR_ID(91, "sys_cpub_div16"),
CLK_MSR_ID(92, "sys_pll_cpub_div16"),
CLK_MSR_ID(94, "eth_phy_rx"),
CLK_MSR_ID(95, "eth_phy_pll"),
CLK_MSR_ID(96, "vpu_b"),
CLK_MSR_ID(97, "cpu_b_tmp"),
CLK_MSR_ID(98, "ts"),
CLK_MSR_ID(99, "ring_osc_out_ee_3"),
CLK_MSR_ID(100, "ring_osc_out_ee_4"),
CLK_MSR_ID(101, "ring_osc_out_ee_5"),
CLK_MSR_ID(102, "ring_osc_out_ee_6"),
CLK_MSR_ID(103, "ring_osc_out_ee_7"),
CLK_MSR_ID(104, "ring_osc_out_ee_8"),
CLK_MSR_ID(105, "ring_osc_out_ee_9"),
CLK_MSR_ID(106, "ephy_test"),
CLK_MSR_ID(107, "au_dac_g128x"),
CLK_MSR_ID(108, "audio_locker_out"),
CLK_MSR_ID(109, "audio_locker_in"),
CLK_MSR_ID(110, "audio_tdmout_c_sclk"),
CLK_MSR_ID(111, "audio_tdmout_b_sclk"),
CLK_MSR_ID(112, "audio_tdmout_a_sclk"),
CLK_MSR_ID(113, "audio_tdmin_lb_sclk"),
CLK_MSR_ID(114, "audio_tdmin_c_sclk"),
CLK_MSR_ID(115, "audio_tdmin_b_sclk"),
CLK_MSR_ID(116, "audio_tdmin_a_sclk"),
CLK_MSR_ID(117, "audio_resample"),
CLK_MSR_ID(118, "audio_pdm_sys"),
CLK_MSR_ID(119, "audio_spdifout_b"),
CLK_MSR_ID(120, "audio_spdifout"),
CLK_MSR_ID(121, "audio_spdifin"),
CLK_MSR_ID(122, "audio_pdm_dclk"),
};
static struct meson_msr_id clk_msr_sm1[CLK_MSR_MAX] = {
CLK_MSR_ID(0, "ring_osc_out_ee_0"),
CLK_MSR_ID(1, "ring_osc_out_ee_1"),
CLK_MSR_ID(2, "ring_osc_out_ee_2"),
CLK_MSR_ID(3, "ring_osc_out_ee_3"),
CLK_MSR_ID(4, "gp0_pll"),
CLK_MSR_ID(5, "gp1_pll"),
CLK_MSR_ID(6, "enci"),
CLK_MSR_ID(7, "clk81"),
CLK_MSR_ID(8, "encp"),
CLK_MSR_ID(9, "encl"),
CLK_MSR_ID(10, "vdac"),
CLK_MSR_ID(11, "eth_tx"),
CLK_MSR_ID(12, "hifi_pll"),
CLK_MSR_ID(13, "mod_tcon"),
CLK_MSR_ID(14, "fec_0"),
CLK_MSR_ID(15, "fec_1"),
CLK_MSR_ID(16, "fec_2"),
CLK_MSR_ID(17, "sys_pll_div16"),
CLK_MSR_ID(18, "sys_cpu_div16"),
CLK_MSR_ID(19, "lcd_an_ph2"),
CLK_MSR_ID(20, "rtc_osc_out"),
CLK_MSR_ID(21, "lcd_an_ph3"),
CLK_MSR_ID(22, "eth_phy_ref"),
CLK_MSR_ID(23, "mpll_50m"),
CLK_MSR_ID(24, "eth_125m"),
CLK_MSR_ID(25, "eth_rmii"),
CLK_MSR_ID(26, "sc_int"),
CLK_MSR_ID(27, "in_mac"),
CLK_MSR_ID(28, "sar_adc"),
CLK_MSR_ID(29, "pcie_inp"),
CLK_MSR_ID(30, "pcie_inn"),
CLK_MSR_ID(31, "mpll_test_out"),
CLK_MSR_ID(32, "vdec"),
CLK_MSR_ID(34, "eth_mpll_50m"),
CLK_MSR_ID(35, "mali"),
CLK_MSR_ID(36, "hdmi_tx_pixel"),
CLK_MSR_ID(37, "cdac"),
CLK_MSR_ID(38, "vdin_meas"),
CLK_MSR_ID(39, "bt656"),
CLK_MSR_ID(40, "arm_ring_osc_out_4"),
CLK_MSR_ID(41, "eth_rx_or_rmii"),
CLK_MSR_ID(42, "mp0_out"),
CLK_MSR_ID(43, "fclk_div5"),
CLK_MSR_ID(44, "pwm_b"),
CLK_MSR_ID(45, "pwm_a"),
CLK_MSR_ID(46, "vpu"),
CLK_MSR_ID(47, "ddr_dpll_pt"),
CLK_MSR_ID(48, "mp1_out"),
CLK_MSR_ID(49, "mp2_out"),
CLK_MSR_ID(50, "mp3_out"),
CLK_MSR_ID(51, "sd_emmc_c"),
CLK_MSR_ID(52, "sd_emmc_b"),
CLK_MSR_ID(53, "sd_emmc_a"),
CLK_MSR_ID(54, "vpu_clkc"),
CLK_MSR_ID(55, "vid_pll_div_out"),
CLK_MSR_ID(56, "wave420l_a"),
CLK_MSR_ID(57, "wave420l_c"),
CLK_MSR_ID(58, "wave420l_b"),
CLK_MSR_ID(59, "hcodec"),
CLK_MSR_ID(60, "arm_ring_osc_out_5"),
CLK_MSR_ID(61, "gpio_msr"),
CLK_MSR_ID(62, "hevcb"),
CLK_MSR_ID(63, "dsi_meas"),
CLK_MSR_ID(64, "spicc_1"),
CLK_MSR_ID(65, "spicc_0"),
CLK_MSR_ID(66, "vid_lock"),
CLK_MSR_ID(67, "dsi_phy"),
CLK_MSR_ID(68, "hdcp22_esm"),
CLK_MSR_ID(69, "hdcp22_skp"),
CLK_MSR_ID(70, "pwm_f"),
CLK_MSR_ID(71, "pwm_e"),
CLK_MSR_ID(72, "pwm_d"),
CLK_MSR_ID(73, "pwm_c"),
CLK_MSR_ID(74, "arm_ring_osc_out_6"),
CLK_MSR_ID(75, "hevcf"),
CLK_MSR_ID(76, "arm_ring_osc_out_7"),
CLK_MSR_ID(77, "rng_ring_osc_0"),
CLK_MSR_ID(78, "rng_ring_osc_1"),
CLK_MSR_ID(79, "rng_ring_osc_2"),
CLK_MSR_ID(80, "rng_ring_osc_3"),
CLK_MSR_ID(81, "vapb"),
CLK_MSR_ID(82, "ge2d"),
CLK_MSR_ID(83, "co_rx"),
CLK_MSR_ID(84, "co_tx"),
CLK_MSR_ID(85, "arm_ring_osc_out_8"),
CLK_MSR_ID(86, "arm_ring_osc_out_9"),
CLK_MSR_ID(87, "mipi_dsi_phy"),
CLK_MSR_ID(88, "cis2_adapt"),
CLK_MSR_ID(89, "hdmi_todig"),
CLK_MSR_ID(90, "hdmitx_sys"),
CLK_MSR_ID(91, "nna_core"),
CLK_MSR_ID(92, "nna_axi"),
CLK_MSR_ID(93, "vad"),
CLK_MSR_ID(94, "eth_phy_rx"),
CLK_MSR_ID(95, "eth_phy_pll"),
CLK_MSR_ID(96, "vpu_b"),
CLK_MSR_ID(97, "cpu_b_tmp"),
CLK_MSR_ID(98, "ts"),
CLK_MSR_ID(99, "arm_ring_osc_out_10"),
CLK_MSR_ID(100, "arm_ring_osc_out_11"),
CLK_MSR_ID(101, "arm_ring_osc_out_12"),
CLK_MSR_ID(102, "arm_ring_osc_out_13"),
CLK_MSR_ID(103, "arm_ring_osc_out_14"),
CLK_MSR_ID(104, "arm_ring_osc_out_15"),
CLK_MSR_ID(105, "arm_ring_osc_out_16"),
CLK_MSR_ID(106, "ephy_test"),
CLK_MSR_ID(107, "au_dac_g128x"),
CLK_MSR_ID(108, "audio_locker_out"),
CLK_MSR_ID(109, "audio_locker_in"),
CLK_MSR_ID(110, "audio_tdmout_c_sclk"),
CLK_MSR_ID(111, "audio_tdmout_b_sclk"),
CLK_MSR_ID(112, "audio_tdmout_a_sclk"),
CLK_MSR_ID(113, "audio_tdmin_lb_sclk"),
CLK_MSR_ID(114, "audio_tdmin_c_sclk"),
CLK_MSR_ID(115, "audio_tdmin_b_sclk"),
CLK_MSR_ID(116, "audio_tdmin_a_sclk"),
CLK_MSR_ID(117, "audio_resample"),
CLK_MSR_ID(118, "audio_pdm_sys"),
CLK_MSR_ID(119, "audio_spdifout_b"),
CLK_MSR_ID(120, "audio_spdifout"),
CLK_MSR_ID(121, "audio_spdifin"),
CLK_MSR_ID(122, "audio_pdm_dclk"),
CLK_MSR_ID(123, "audio_resampled"),
CLK_MSR_ID(124, "earcrx_pll"),
CLK_MSR_ID(125, "earcrx_pll_test"),
CLK_MSR_ID(126, "csi_phy0"),
CLK_MSR_ID(127, "csi2_data"),
};
static int meson_clk_msr_measure_id(struct meson_msr *priv, unsigned int id,
unsigned int duration)
{
unsigned int val;
int ret;
regmap_write(priv->regmap, MSR_CLK_REG0, 0);
/* Set measurement duration */
regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_DURATION,
FIELD_PREP(MSR_DURATION, duration - 1));
/* Set ID */
regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_CLK_SRC,
FIELD_PREP(MSR_CLK_SRC, id));
/* Enable & Start */
regmap_update_bits(priv->regmap, MSR_CLK_REG0,
MSR_RUN | MSR_ENABLE,
MSR_RUN | MSR_ENABLE);
ret = regmap_read_poll_timeout(priv->regmap, MSR_CLK_REG0,
val, !(val & MSR_BUSY), 10, 10000);
if (ret)
return ret;
/* Disable */
regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_ENABLE, 0);
/* Get the value in multiple of gate time counts */
regmap_read(priv->regmap, MSR_CLK_REG2, &val);
if (val >= MSR_VAL_MASK)
return -EINVAL;
return DIV_ROUND_CLOSEST_ULL((val & MSR_VAL_MASK) * 1000000ULL,
duration);
}
static int meson_clk_msr_best_id(struct meson_msr *priv, unsigned int id,
unsigned int *precision)
{
unsigned int duration = DIV_MAX;
int ret;
/* Start from max duration and down to min duration */
do {
ret = meson_clk_msr_measure_id(priv, id, duration);
if (ret >= 0)
*precision = (2 * 1000000) / duration;
else
duration -= DIV_STEP;
} while (duration >= DIV_MIN && ret == -EINVAL);
return ret;
}
static void meson_clk_msr_dump(struct udevice *dev)
{
struct meson_msr *priv = dev_get_priv(dev);
unsigned int precision = 0;
int val, i;
printf(" clock rate precision\n");
printf("---------------------------------------------\n");
for (i = 0 ; i < CLK_MSR_MAX ; ++i) {
if (!priv->msr_table[i].name)
continue;
val = meson_clk_msr_best_id(priv, i, &precision);
if (val < 0)
return;
printf(" %-20s %10d +/-%dHz\n",
priv->msr_table[i].name, val, precision);
}
}
static int meson_clk_msr_xlate(struct clk *clk, struct ofnode_phandle_args *args)
{
/* This driver doesn't expose any clocks */
return -EINVAL;
}
static int meson_clk_msr_probe(struct udevice *dev)
{
struct meson_msr *priv = dev_get_priv(dev);
int ret;
priv->msr_table = (struct meson_msr_id *)dev_get_driver_data(dev);
ret = regmap_init_mem(dev_ofnode(dev), &priv->regmap);
if (ret)
return ret;
return 0;
}
static struct clk_ops meson_clk_msr_ops = {
.of_xlate = meson_clk_msr_xlate,
.dump = meson_clk_msr_dump,
};
static const struct udevice_id meson_clk_msr_ids[] = {
{
.compatible = "amlogic,meson-gx-clk-measure",
.data = (ulong)clk_msr_gx,
},
{
.compatible = "amlogic,meson8-clk-measure",
.data = (ulong)clk_msr_m8,
},
{
.compatible = "amlogic,meson8b-clk-measure",
.data = (ulong)clk_msr_m8,
},
{
.compatible = "amlogic,meson-axg-clk-measure",
.data = (ulong)clk_msr_axg,
},
{
.compatible = "amlogic,meson-g12a-clk-measure",
.data = (ulong)clk_msr_g12a,
},
{
.compatible = "amlogic,meson-sm1-clk-measure",
.data = (ulong)clk_msr_sm1,
},
{ /* sentinel */ }
};
U_BOOT_DRIVER(meson_clk_msr) = {
.name = "meson_clk_msr",
.id = UCLASS_CLK,
.of_match = meson_clk_msr_ids,
.priv_auto = sizeof(struct meson_msr),
.ops = &meson_clk_msr_ops,
.probe = meson_clk_msr_probe,
};