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openwrt/target/linux/bcm27xx/patches-6.6/950-0927-drivers-clk-rp1-add-GPCLK-source-muxes-and-additiona.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches 
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

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From d731b472cf1c4cace108edacee64eac7f93aea5b Mon Sep 17 00:00:00 2001
From: Jonathan Bell <jonathan@raspberrypi.com>
Date: Tue, 5 Mar 2024 10:07:17 +0000
Subject: [PATCH 0927/1085] drivers: clk: rp1: add GPCLK source muxes and
additional PLL dividers
General-purpose clocks are routed (via a pad) to a large variety of
peripheral aux muxes, and themselves gather a large variety of source
clocks. Entries without a corresponding name string should not be
selected - they bring out internal test/debug clocks which may be
intermittent or very high frequency.
As the GPCLK inputs to peripheral muxes come from a pad, differentiate
the source name from the divider output name. This allows the
possibility of specifying an off-chip clock source to drive the internal
peripheral clock.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
---
drivers/clk/clk-rp1.c | 294 ++++++++++++++++++++++++++++++++++--------
1 file changed, 242 insertions(+), 52 deletions(-)
--- a/drivers/clk/clk-rp1.c
+++ b/drivers/clk/clk-rp1.c
@@ -35,6 +35,7 @@
#define PLL_AUDIO_FBDIV_FRAC 0x0c00c
#define PLL_AUDIO_PRIM 0x0c010
#define PLL_AUDIO_SEC 0x0c014
+#define PLL_AUDIO_TERN 0x0c018
#define PLL_VIDEO_CS 0x10000
#define PLL_VIDEO_PWR 0x10004
@@ -43,6 +44,8 @@
#define PLL_VIDEO_PRIM 0x10010
#define PLL_VIDEO_SEC 0x10014
+#define GPCLK_OE_CTRL 0x00000
+
#define CLK_SYS_CTRL 0x00014
#define CLK_SYS_DIV_INT 0x00018
#define CLK_SYS_SEL 0x00020
@@ -245,7 +248,7 @@
#define LOCK_TIMEOUT_NS 100000000
#define FC_TIMEOUT_NS 100000000
-#define MAX_CLK_PARENTS 8
+#define MAX_CLK_PARENTS 16
#define MEASURE_CLOCK_RATE
const char * const fc0_ref_clk_name = "clk_slow_sys";
@@ -351,6 +354,7 @@ struct rp1_clock_data {
int num_std_parents;
int num_aux_parents;
unsigned long flags;
+ u32 oe_mask;
u32 clk_src_mask;
u32 ctrl_reg;
u32 div_int_reg;
@@ -1011,6 +1015,10 @@ static int rp1_clock_on(struct clk_hw *h
spin_lock(&clockman->regs_lock);
clockman_write(clockman, data->ctrl_reg,
clockman_read(clockman, data->ctrl_reg) | CLK_CTRL_ENABLE);
+ /* If this is a GPCLK, turn on the output-enable */
+ if (data->oe_mask)
+ clockman_write(clockman, GPCLK_OE_CTRL,
+ clockman_read(clockman, GPCLK_OE_CTRL) | data->oe_mask);
spin_unlock(&clockman->regs_lock);
#ifdef MEASURE_CLOCK_RATE
@@ -1028,6 +1036,10 @@ static void rp1_clock_off(struct clk_hw
spin_lock(&clockman->regs_lock);
clockman_write(clockman, data->ctrl_reg,
clockman_read(clockman, data->ctrl_reg) & ~CLK_CTRL_ENABLE);
+ /* If this is a GPCLK, turn off the output-enable */
+ if (data->oe_mask)
+ clockman_write(clockman, GPCLK_OE_CTRL,
+ clockman_read(clockman, GPCLK_OE_CTRL) & ~data->oe_mask);
spin_unlock(&clockman->regs_lock);
}
@@ -1614,6 +1626,15 @@ static const struct rp1_clk_desc clk_des
.fc0_src = FC_NUM(5, 1),
),
+ [RP1_PLL_VIDEO_PRI_PH] = REGISTER_PLL_PH(
+ .name = "pll_video_pri_ph",
+ .source_pll = "pll_video",
+ .ph_reg = PLL_VIDEO_PRIM,
+ .fixed_divider = 2,
+ .phase = RP1_PLL_PHASE_0,
+ .fc0_src = FC_NUM(4, 3),
+ ),
+
[RP1_PLL_SYS_SEC] = REGISTER_PLL_DIV(
.name = "pll_sys_sec",
.source_pll = "pll_sys_core",
@@ -1635,6 +1656,13 @@ static const struct rp1_clk_desc clk_des
.fc0_src = FC_NUM(5, 3),
),
+ [RP1_PLL_AUDIO_TERN] = REGISTER_PLL_DIV(
+ .name = "pll_audio_tern",
+ .source_pll = "pll_audio_core",
+ .ctrl_reg = PLL_AUDIO_TERN,
+ .fc0_src = FC_NUM(6, 2),
+ ),
+
[RP1_CLK_SYS] = REGISTER_CLK(
.name = "clk_sys",
.parents = {"xosc", "-", "pll_sys"},
@@ -1665,9 +1693,15 @@ static const struct rp1_clk_desc clk_des
.name = "clk_uart",
.parents = {"pll_sys_pri_ph",
"pll_video",
- "xosc"},
+ "xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 3,
+ .num_aux_parents = 9,
.ctrl_reg = CLK_UART_CTRL,
.div_int_reg = CLK_UART_DIV_INT,
.sel_reg = CLK_UART_SEL,
@@ -1677,9 +1711,17 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_ETH] = REGISTER_CLK(
.name = "clk_eth",
- .parents = {"-"},
- .num_std_parents = 1,
- .num_aux_parents = 0,
+ .parents = {"pll_sys_sec",
+ "pll_sys",
+ "pll_video_sec",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
+ .num_std_parents = 0,
+ .num_aux_parents = 9,
.ctrl_reg = CLK_ETH_CTRL,
.div_int_reg = CLK_ETH_DIV_INT,
.sel_reg = CLK_ETH_SEL,
@@ -1691,9 +1733,15 @@ static const struct rp1_clk_desc clk_des
.name = "clk_pwm0",
.parents = {"pll_audio_pri_ph",
"pll_video_sec",
- "xosc"},
+ "xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 3,
+ .num_aux_parents = 9,
.ctrl_reg = CLK_PWM0_CTRL,
.div_int_reg = CLK_PWM0_DIV_INT,
.div_frac_reg = CLK_PWM0_DIV_FRAC,
@@ -1706,9 +1754,15 @@ static const struct rp1_clk_desc clk_des
.name = "clk_pwm1",
.parents = {"pll_audio_pri_ph",
"pll_video_sec",
- "xosc"},
+ "xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 3,
+ .num_aux_parents = 9,
.ctrl_reg = CLK_PWM1_CTRL,
.div_int_reg = CLK_PWM1_DIV_INT,
.div_frac_reg = CLK_PWM1_DIV_FRAC,
@@ -1719,9 +1773,19 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_AUDIO_IN] = REGISTER_CLK(
.name = "clk_audio_in",
- .parents = {"-"},
- .num_std_parents = 1,
- .num_aux_parents = 0,
+ .parents = {"pll_audio",
+ "pll_audio_pri_ph",
+ "pll_audio_sec",
+ "pll_video_sec",
+ "xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
+ .num_std_parents = 0,
+ .num_aux_parents = 11,
.ctrl_reg = CLK_AUDIO_IN_CTRL,
.div_int_reg = CLK_AUDIO_IN_DIV_INT,
.sel_reg = CLK_AUDIO_IN_SEL,
@@ -1731,9 +1795,18 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_AUDIO_OUT] = REGISTER_CLK(
.name = "clk_audio_out",
- .parents = {"-"},
- .num_std_parents = 1,
- .num_aux_parents = 0,
+ .parents = {"pll_audio",
+ "pll_audio_sec",
+ "pll_video_sec",
+ "xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
+ .num_std_parents = 0,
+ .num_aux_parents = 10,
.ctrl_reg = CLK_AUDIO_OUT_CTRL,
.div_int_reg = CLK_AUDIO_OUT_DIV_INT,
.sel_reg = CLK_AUDIO_OUT_SEL,
@@ -1745,9 +1818,15 @@ static const struct rp1_clk_desc clk_des
.name = "clk_i2s",
.parents = {"xosc",
"pll_audio",
- "pll_audio_sec"},
+ "pll_audio_sec",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 3,
+ .num_aux_parents = 9,
.ctrl_reg = CLK_I2S_CTRL,
.div_int_reg = CLK_I2S_DIV_INT,
.sel_reg = CLK_I2S_SEL,
@@ -1782,9 +1861,16 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_ETH_TSU] = REGISTER_CLK(
.name = "clk_eth_tsu",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "pll_video_sec",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 8,
.ctrl_reg = CLK_ETH_TSU_CTRL,
.div_int_reg = CLK_ETH_TSU_DIV_INT,
.sel_reg = CLK_ETH_TSU_SEL,
@@ -1794,9 +1880,16 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_ADC] = REGISTER_CLK(
.name = "clk_adc",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "pll_audio_tern",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5"},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 8,
.ctrl_reg = CLK_ADC_CTRL,
.div_int_reg = CLK_ADC_DIV_INT,
.sel_reg = CLK_ADC_SEL,
@@ -1830,9 +1923,25 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP0] = REGISTER_CLK(
.name = "clk_gp0",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5",
+ "pll_sys",
+ "pll_audio",
+ "",
+ "",
+ "clk_i2s",
+ "clk_adc",
+ "",
+ "",
+ "",
+ "clk_sys"},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(0),
.ctrl_reg = CLK_GP0_CTRL,
.div_int_reg = CLK_GP0_DIV_INT,
.div_frac_reg = CLK_GP0_DIV_FRAC,
@@ -1843,9 +1952,25 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP1] = REGISTER_CLK(
.name = "clk_gp1",
- .parents = {"xosc"},
+ .parents = {"clk_sdio_timer",
+ "clksrc_gp0",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5",
+ "pll_sys_pri_ph",
+ "pll_audio_pri_ph",
+ "",
+ "",
+ "clk_adc",
+ "clk_dpi",
+ "clk_pwm0",
+ "",
+ "",
+ ""},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(1),
.ctrl_reg = CLK_GP1_CTRL,
.div_int_reg = CLK_GP1_DIV_INT,
.div_frac_reg = CLK_GP1_DIV_FRAC,
@@ -1856,9 +1981,25 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP2] = REGISTER_CLK(
.name = "clk_gp2",
- .parents = {"xosc"},
+ .parents = {"clk_sdio_alt_src",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "clksrc_gp5",
+ "pll_sys_sec",
+ "pll_audio_sec",
+ "pll_video",
+ "clk_audio_in",
+ "clk_dpi",
+ "clk_pwm0",
+ "clk_pwm1",
+ "clk_mipi0_dpi",
+ "clk_mipi1_cfg",
+ "clk_sys"},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(2),
.ctrl_reg = CLK_GP2_CTRL,
.div_int_reg = CLK_GP2_DIV_INT,
.div_frac_reg = CLK_GP2_DIV_FRAC,
@@ -1869,9 +2010,25 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP3] = REGISTER_CLK(
.name = "clk_gp3",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp4",
+ "clksrc_gp5",
+ "",
+ "",
+ "pll_video_pri_ph",
+ "clk_audio_out",
+ "",
+ "",
+ "clk_mipi1_dpi",
+ "",
+ "",
+ ""},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(3),
.ctrl_reg = CLK_GP3_CTRL,
.div_int_reg = CLK_GP3_DIV_INT,
.div_frac_reg = CLK_GP3_DIV_FRAC,
@@ -1882,9 +2039,26 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP4] = REGISTER_CLK(
.name = "clk_gp4",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp5",
+ "pll_audio_tern",
+ "pll_video_sec",
+ "",
+ "",
+ "",
+ "clk_mipi0_cfg",
+ "clk_uart",
+ "",
+ "",
+ "clk_sys",
+ },
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(4),
.ctrl_reg = CLK_GP4_CTRL,
.div_int_reg = CLK_GP4_DIV_INT,
.div_frac_reg = CLK_GP4_DIV_FRAC,
@@ -1895,9 +2069,25 @@ static const struct rp1_clk_desc clk_des
[RP1_CLK_GP5] = REGISTER_CLK(
.name = "clk_gp5",
- .parents = {"xosc"},
+ .parents = {"xosc",
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4",
+ "pll_audio_tern",
+ "pll_video_sec",
+ "clk_eth_tsu",
+ "",
+ "clk_vec",
+ "",
+ "",
+ "",
+ "",
+ ""},
.num_std_parents = 0,
- .num_aux_parents = 1,
+ .num_aux_parents = 16,
+ .oe_mask = BIT(5),
.ctrl_reg = CLK_GP5_CTRL,
.div_int_reg = CLK_GP5_DIV_INT,
.div_frac_reg = CLK_GP5_DIV_FRAC,
@@ -1911,11 +2101,11 @@ static const struct rp1_clk_desc clk_des
.parents = {"pll_sys_pri_ph",
"pll_video_sec",
"pll_video",
- "clk_gp0",
- "clk_gp1",
- "clk_gp2",
- "clk_gp3",
- "clk_gp4"},
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4"},
.num_std_parents = 0,
.num_aux_parents = 8, /* XXX in fact there are more than 8 */
.ctrl_reg = VIDEO_CLK_VEC_CTRL,
@@ -1931,11 +2121,11 @@ static const struct rp1_clk_desc clk_des
.parents = {"pll_sys",
"pll_video_sec",
"pll_video",
- "clk_gp0",
- "clk_gp1",
- "clk_gp2",
- "clk_gp3",
- "clk_gp4"},
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3",
+ "clksrc_gp4"},
.num_std_parents = 0,
.num_aux_parents = 8, /* XXX in fact there are more than 8 */
.ctrl_reg = VIDEO_CLK_DPI_CTRL,
@@ -1952,10 +2142,10 @@ static const struct rp1_clk_desc clk_des
"pll_video_sec",
"pll_video",
"clksrc_mipi0_dsi_byteclk",
- "clk_gp0",
- "clk_gp1",
- "clk_gp2",
- "clk_gp3"},
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3"},
.num_std_parents = 0,
.num_aux_parents = 8, /* XXX in fact there are more than 8 */
.ctrl_reg = VIDEO_CLK_MIPI0_DPI_CTRL,
@@ -1973,10 +2163,10 @@ static const struct rp1_clk_desc clk_des
"pll_video_sec",
"pll_video",
"clksrc_mipi1_dsi_byteclk",
- "clk_gp0",
- "clk_gp1",
- "clk_gp2",
- "clk_gp3"},
+ "clksrc_gp0",
+ "clksrc_gp1",
+ "clksrc_gp2",
+ "clksrc_gp3"},
.num_std_parents = 0,
.num_aux_parents = 8, /* XXX in fact there are more than 8 */
.ctrl_reg = VIDEO_CLK_MIPI1_DPI_CTRL,
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