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serial_jtag: fix issue that stuck after retart after C6

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This commit is contained in:
Cao Sen Miao 2023-01-03 10:38:18 +08:00
parent bef3f2ce9e
commit a1285ff4a5
1 changed files with 25 additions and 4 deletions
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29
components/esp_hw_support/port/esp32c6/rtc_clk.c
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -19,12 +19,15 @@
#include "hal/regi2c_ctrl_ll.h"
#include "soc/io_mux_reg.h"
#include "soc/lp_aon_reg.h"
#include "hal/usb_serial_jtag_ll.h"
static const char *TAG = "rtc_clk";
// Current PLL frequency, in 480MHz. Zero if PLL is not enabled.
static int s_cur_pll_freq;
static bool rtc_clk_set_bbpll_always_on(void);
void rtc_clk_32k_enable(bool enable)
{
if (enable) {
@ -221,7 +224,7 @@ void rtc_clk_cpu_freq_set_config(const rtc_cpu_freq_config_t *config)
soc_cpu_clk_src_t old_cpu_clk_src = clk_ll_cpu_get_src();
if (config->source == SOC_CPU_CLK_SRC_XTAL) {
rtc_clk_cpu_freq_to_xtal(config->freq_mhz, config->div);
if (old_cpu_clk_src == SOC_CPU_CLK_SRC_PLL) {
if ((old_cpu_clk_src == SOC_CPU_CLK_SRC_PLL) && !rtc_clk_set_bbpll_always_on()) {
rtc_clk_bbpll_disable();
}
} else if (config->source == SOC_CPU_CLK_SRC_PLL) {
@ -232,7 +235,7 @@ void rtc_clk_cpu_freq_set_config(const rtc_cpu_freq_config_t *config)
rtc_clk_cpu_freq_to_pll_mhz(config->freq_mhz);
} else if (config->source == SOC_CPU_CLK_SRC_RC_FAST) {
rtc_clk_cpu_freq_to_8m();
if (old_cpu_clk_src == SOC_CPU_CLK_SRC_PLL) {
if ((old_cpu_clk_src == SOC_CPU_CLK_SRC_PLL) && !rtc_clk_set_bbpll_always_on()) {
rtc_clk_bbpll_disable();
}
}
@ -294,7 +297,10 @@ void rtc_clk_cpu_freq_set_xtal(void)
int freq_mhz = (int)rtc_clk_xtal_freq_get();
rtc_clk_cpu_freq_to_xtal(freq_mhz, 1);
rtc_clk_bbpll_disable();
// We don't turn off the bbpll if some consumers only depends on bbpll
if (!rtc_clk_set_bbpll_always_on()) {
rtc_clk_bbpll_disable();
}
}
rtc_xtal_freq_t rtc_clk_xtal_freq_get(void)
@ -362,6 +368,21 @@ bool rtc_dig_8m_enabled(void)
return clk_ll_rc_fast_digi_is_enabled();
}
static bool rtc_clk_set_bbpll_always_on(void)
{
/* We just keep the rtc bbpll clock on just under the case that
user selects the `RTC_CLOCK_BBPLL_POWER_ON_WITH_USB` as well as
the USB_SERIAL_JTAG is connected with PC.
*/
bool is_bbpll_on = false;
#if CONFIG_RTC_CLOCK_BBPLL_POWER_ON_WITH_USB
if (usb_serial_jtag_ll_txfifo_writable() == 1) {
is_bbpll_on = true;
}
#endif
return is_bbpll_on;
}
/* Name used in libphy.a:phy_chip_v7.o
* TODO: update the library to use rtc_clk_xtal_freq_get
*/