mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
57 lines
2.1 KiB
Diff
57 lines
2.1 KiB
Diff
From c70ae3d1923339746d156bd1d723d141113183aa Mon Sep 17 00:00:00 2001
|
|
From: Joerg Schambacher <joerg@i2audio.com>
|
|
Date: Mon, 1 Feb 2021 16:53:46 +0100
|
|
Subject: [PATCH] Hifiberry DAC+ADC Pro fix for the PLL when changing
|
|
sample rates
|
|
|
|
Adds 2 msecs delay when switching between oscillators to allow
|
|
correct PLL settling.
|
|
Thanks to Clive Messer for the support!
|
|
|
|
Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
|
|
---
|
|
sound/soc/bcm/hifiberry_dacplusadcpro.c | 14 ++++----------
|
|
1 file changed, 4 insertions(+), 10 deletions(-)
|
|
|
|
--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
|
|
+++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
|
|
@@ -190,6 +190,7 @@ static void snd_rpi_hifiberry_dacplusadc
|
|
PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
|
|
break;
|
|
}
|
|
+ usleep_range(2000, 2100);
|
|
}
|
|
|
|
static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component)
|
|
@@ -207,13 +208,6 @@ static bool snd_rpi_hifiberry_dacplusadc
|
|
return (!(sck & 0x40));
|
|
}
|
|
|
|
-static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(
|
|
- struct snd_soc_component *component)
|
|
-{
|
|
- msleep(2);
|
|
- return snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
|
|
-}
|
|
-
|
|
static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component)
|
|
{
|
|
bool isClk44EN, isClk48En, isNoClk;
|
|
@@ -221,13 +215,13 @@ static bool snd_rpi_hifiberry_dacplusadc
|
|
snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component);
|
|
|
|
snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
|
|
- isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
|
|
+ isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
|
|
|
|
snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
|
|
- isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
|
|
+ isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
|
|
|
|
snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
|
|
- isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
|
|
+ isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
|
|
|
|
return (isClk44EN && isClk48En && !isNoClk);
|
|
}
|