[PATCH master 0/3] clk: imx: composite-8m: fix muxing of core and bus

[PATCH master 0/3] clk: imx: composite-8m: fix muxing of core and bus

[Ahmad Fatoum]

The i.MX8M differntiates between three types of composite clocks (called
slices): Core, Bus and IP (peripheral) clocks. How muxes are configured
differs between these clocks, so the driver is populating a mux_ops
variable to point at the correct struct clk_ops.

Unfortunately, mux_ops wasn't actually used, leading to barebox hangs,
depending on the assigned-clock-parents properties in the device tree.

This is correct here. The issues were observed on an i.MX8MP.

Ahmad Fatoum (3):
  clk: imx: add IMX_COMPOSITE_CLK_FLAGS_DEFAULT macro
  clk: imx: composite-8m: fix muxing of core and bus clocks
  clk: imx: imx8mp: sync with Linux v6.9-rc3

 drivers/clk/imx/clk-composite-8m.c | 26 +++++----
 drivers/clk/imx/clk-imx8mp.c       | 93 +++++++++++++++++++-----------
 drivers/clk/imx/clk.h              | 19 +++++-
 3 files changed, 90 insertions(+), 48 deletions(-)

-- 
2.39.2

[PATCH master 1/3] clk: imx: add IMX_COMPOSITE_CLK_FLAGS_DEFAULT macro

[Ahmad Fatoum]

We use the same flags in two macros and will add one more instance in a
follow-up commit, so factor them out into a macro like Linux does.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/clk/imx/clk.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 9058f913d316..00dc72831f38 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -276,6 +276,9 @@ struct clk *imx_clk_cpu(const char *name, const char *parent_name,
 #define IMX_COMPOSITE_CORE      BIT(0)
 #define IMX_COMPOSITE_BUS       BIT(1)
 
+#define IMX_COMPOSITE_CLK_FLAGS_DEFAULT \
+	(CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+
 struct clk *imx8m_clk_composite_flags(const char *name,
 		const char * const *parent_names, int num_parents, void __iomem *reg,
 		u32 composite_flags,
@@ -285,13 +288,13 @@ struct clk *imx8m_clk_composite_flags(const char *name,
         imx8m_clk_hw_composite_flags(name, parent_names, \
                         ARRAY_SIZE(parent_names), reg, \
                         IMX_COMPOSITE_CORE, \
-                        CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+                        IMX_COMPOSITE_CLK_FLAGS_DEFAULT)
 
 #define imx8m_clk_hw_composite_bus(name, parent_names, reg)     \
         imx8m_clk_hw_composite_flags(name, parent_names, \
                         ARRAY_SIZE(parent_names), reg, \
                         IMX_COMPOSITE_BUS, \
-                        CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+                        IMX_COMPOSITE_CLK_FLAGS_DEFAULT)
 
 #define __imx8m_clk_composite(name, parent_names, reg, flags) \
 		imx8m_clk_composite_flags(name, parent_names, \
-- 
2.39.2

[PATCH master 2/3] clk: imx: composite-8m: fix muxing of core and bus clocks

[Ahmad Fatoum]

The i.MX8M differntiates between three types of composite clocks (called
slices): Core, Bus and IP (peripheral) clocks. How muxes are configured
differs between these clocks, so the driver is populating a mux_ops
variable to point at the correct struct clk_ops.

Unfortunately, mux_ops wasn't actually used, leading to barebox hangs,
depending on the assigned-clock-parents properties in the device tree.

This oversight is likely due to the different prototypes of
clk_register_composite and clk_hw_register_composite, the latter of
which didn't exist when the driver was added.

The API is available now, so sync the function with Linux to fix
this issue.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/clk/imx/clk-composite-8m.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/imx/clk-composite-8m.c b/drivers/clk/imx/clk-composite-8m.c
index 72534117f210..04d83d208b07 100644
--- a/drivers/clk/imx/clk-composite-8m.c
+++ b/drivers/clk/imx/clk-composite-8m.c
@@ -158,40 +158,43 @@ struct clk *imx8m_clk_composite_flags(const char *name,
 					u32 composite_flags,
 					unsigned long flags)
 {
-	struct clk *comp = ERR_PTR(-ENOMEM);
+	struct clk_hw *hw = ERR_PTR(-ENOMEM), *mux_hw;
+	struct clk_hw *div_hw, *gate_hw = NULL;
 	struct clk_divider *div = NULL;
 	struct clk_gate *gate = NULL;
 	struct clk_mux *mux = NULL;
+	const struct clk_ops *divider_ops;
 	const struct clk_ops *mux_ops;
 
 	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
 	if (!mux)
 		goto fail;
 
+	mux_hw = &mux->hw;
 	mux->reg = reg;
 	mux->shift = PCG_PCS_SHIFT;
 	mux->width = PCG_PCS_WIDTH;
-	mux->hw.clk.ops = &clk_mux_ops;
 
 	div = kzalloc(sizeof(*div), GFP_KERNEL);
 	if (!div)
 		goto fail;
 
+	div_hw = &div->hw;
 	div->reg = reg;
 	if (composite_flags & IMX_COMPOSITE_CORE) {
 		div->shift = PCG_DIV_SHIFT;
 		div->width = PCG_CORE_DIV_WIDTH;
-		div->hw.clk.ops = &clk_divider_ops;
+		divider_ops = &clk_divider_ops;
 		mux_ops = &imx8m_clk_composite_mux_ops;
 	} else if (composite_flags & IMX_COMPOSITE_BUS) {
 		div->shift = PCG_PREDIV_SHIFT;
 		div->width = PCG_PREDIV_WIDTH;
-		div->hw.clk.ops = &imx8m_clk_composite_divider_ops;
+		divider_ops = &imx8m_clk_composite_divider_ops;
 		mux_ops = &imx8m_clk_composite_mux_ops;
 	} else {
 		div->shift = PCG_PREDIV_SHIFT;
 		div->width = PCG_PREDIV_WIDTH;
-		div->hw.clk.ops = &imx8m_clk_composite_divider_ops;
+		divider_ops = &imx8m_clk_composite_divider_ops;
 		mux_ops = &clk_mux_ops;
 	}
 
@@ -199,20 +202,21 @@ struct clk *imx8m_clk_composite_flags(const char *name,
 	if (!gate)
 		goto fail;
 
+	gate_hw = &gate->hw;
 	gate->reg = reg;
 	gate->shift = PCG_CGC_SHIFT;
-	gate->hw.clk.ops = &clk_gate_ops;
 
-	comp = clk_register_composite(name, parent_names, num_parents,
-				      &mux->hw.clk, &div->hw.clk, &gate->hw.clk, flags);
-	if (IS_ERR(comp))
+	hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
+			mux_hw, mux_ops, div_hw,
+			divider_ops, gate_hw, &clk_gate_ops, flags);
+	if (IS_ERR(hw))
 		goto fail;
 
-	return comp;
+	return clk_hw_to_clk(hw);
 
 fail:
 	kfree(gate);
 	kfree(div);
 	kfree(mux);
-	return ERR_CAST(comp);
+	return ERR_CAST(hw);
 }
-- 
2.39.2

[PATCH master 3/3] clk: imx: imx8mp: sync with Linux v6.9-rc3

[Ahmad Fatoum]

This sync is mainly done to pull in Linux commit c277ca155d2f0:
 |  Author:     Peng Fan <peng.fan@nxp.com>
 |  AuthorDate: Sun Nov 1 19:23:54 2020 +0800
 |
 |  clk: imx8m: fix bus critical clk registration
 |
 |  noc/axi/ahb are bus clk, not peripheral clk.
 |  Since peripheral clk has a limitation that for peripheral clock slice,
 |  IP clock slices must be stopped to change the clock source.
 |
 |  However if the bus clk is marked as critical clk peripheral, the
 |  assigned clock parent operation will fail.
 |
 |  So we added CLK_SET_PARENT_GATE flag to avoid glitch.
 |
 |  And add imx8m_clk_hw_composite_bus_critical for bus critical clock usage
 |
 |  Fixes: 936c383673b9e ("clk: imx: fix composite peripheral flags")
 |  Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
 |  Reported-by: Abel Vesa <abel.vesa@nxp.com>
 |  Signed-off-by: Peng Fan <peng.fan@nxp.com>
 |  Link: https://lore.kernel.org/r/1604229834-25594-1-git-send-email-peng.fan@nxp.com
 |  Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Without this, attempts to reparent e.g. noc_io would hang.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/clk/imx/clk-imx8mp.c | 93 +++++++++++++++++++++++-------------
 drivers/clk/imx/clk.h        | 12 ++++-
 2 files changed, 70 insertions(+), 35 deletions(-)

diff --git a/drivers/clk/imx/clk-imx8mp.c b/drivers/clk/imx/clk-imx8mp.c
index e08cebc19c68..ca1066a4dc62 100644
--- a/drivers/clk/imx/clk-imx8mp.c
+++ b/drivers/clk/imx/clk-imx8mp.c
@@ -12,6 +12,11 @@
 
 #include "clk.h"
 
+static u32 share_count_nand;
+static u32 share_count_media;
+static u32 share_count_usb;
+static u32 share_count_audio;
+
 static const char * const pll_ref_sels[] = { "osc_24m", "dummy", "dummy", "dummy", };
 static const char * const audio_pll1_bypass_sels[] = {"audio_pll1", "audio_pll1_ref_sel", };
 static const char * const audio_pll2_bypass_sels[] = {"audio_pll2", "audio_pll2_ref_sel", };
@@ -146,10 +151,6 @@ static const char * const imx8mp_can2_sels[] = {"osc_24m", "sys_pll2_200m", "sys
 						"sys_pll1_160m", "sys_pll1_800m", "sys_pll3_out",
 						"sys_pll2_250m", "audio_pll2_out", };
 
-static const char * const imx8mp_memrepair_sels[] = {"osc_24m", "sys_pll1_160m", "sys_pll2_50m",
-						     "sys_pll3_out", "audio_pll1_out", "video_pll1_out",
-						     "audio_pll2_out", "sys_pll1_133m", };
-
 static const char * const imx8mp_pcie_aux_sels[] = {"osc_24m", "sys_pll2_200m", "sys_pll2_50m",
 						    "sys_pll3_out", "sys_pll2_100m", "sys_pll1_80m",
 						    "sys_pll1_160m", "sys_pll1_200m", };
@@ -352,7 +353,7 @@ static const char * const imx8mp_media_mipi_phy1_ref_sels[] = {"osc_24m", "sys_p
 							       "clk_ext2", "audio_pll2_out",
 							       "video_pll1_out", };
 
-static const char * const imx8mp_media_disp1_pix_sels[] = {"osc_24m", "video_pll1_out", "audio_pll2_out",
+static const char * const imx8mp_media_disp_pix_sels[] = {"osc_24m", "video_pll1_out", "audio_pll2_out",
 							   "audio_pll1_out", "sys_pll1_800m",
 							   "sys_pll2_1000m", "sys_pll3_out", "clk_ext4", };
 
@@ -362,14 +363,13 @@ static const char * const imx8mp_media_cam2_pix_sels[] = {"osc_24m", "sys_pll1_2
 							  "video_pll1_out", };
 
 static const char * const imx8mp_media_ldb_sels[] = {"osc_24m", "sys_pll2_333m", "sys_pll2_100m",
-							       "sys_pll1_800m", "sys_pll2_1000m",
-							       "clk_ext2", "audio_pll2_out",
-							       "video_pll1_out", };
+						     "sys_pll1_800m", "sys_pll2_1000m",
+						     "clk_ext2", "audio_pll2_out",
+						     "video_pll1_out", };
 
-static const char * const imx8mp_media_mipi_csi2_esc_sels[] = {"osc_24m", "sys_pll2_100m", "sys_pll1_80m",
-							       "sys_pll1_800m", "sys_pll2_1000m",
-							       "sys_pll3_out", "clk_ext3",
-							       "audio_pll2_out", };
+static const char * const imx8mp_memrepair_sels[] = {"osc_24m", "sys_pll2_100m", "sys_pll1_80m",
+							"sys_pll1_800m", "sys_pll2_1000m", "sys_pll3_out",
+							"clk_ext3", "audio_pll2_out", };
 
 static const char * const imx8mp_media_mipi_test_byte_sels[] = {"osc_24m", "sys_pll2_200m", "sys_pll2_50m",
 								"sys_pll3_out", "sys_pll2_100m",
@@ -394,6 +394,11 @@ static const char * const imx8mp_sai7_sels[] = {"osc_24m", "audio_pll1_out", "au
 
 static const char * const imx8mp_dram_core_sels[] = {"dram_pll_out", "dram_alt_root", };
 
+static const char * const imx8mp_clkout_sels[] = {"audio_pll1_out", "audio_pll2_out", "video_pll1_out",
+						  "dummy", "dummy", "gpu_pll_out", "vpu_pll_out",
+						  "arm_pll_out", "sys_pll1", "sys_pll2", "sys_pll3",
+						  "dummy", "dummy", "osc_24m", "dummy", "osc_32k"};
+
 static struct clk_onecell_data clk_data;
 static struct clk *clks[IMX8MP_CLK_END];
 
@@ -506,6 +511,15 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_SYS_PLL2_500M] = imx_clk_hw_fixed_factor("sys_pll2_500m", "sys_pll2_out", 1, 2);
 	hws[IMX8MP_SYS_PLL2_1000M] = imx_clk_hw_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1);
 
+	hws[IMX8MP_CLK_CLKOUT1_SEL] = imx_clk_hw_mux2("clkout1_sel", anatop_base + 0x128, 4, 4,
+						      imx8mp_clkout_sels, ARRAY_SIZE(imx8mp_clkout_sels));
+	hws[IMX8MP_CLK_CLKOUT1_DIV] = imx_clk_hw_divider("clkout1_div", "clkout1_sel", anatop_base + 0x128, 0, 4);
+	hws[IMX8MP_CLK_CLKOUT1] = imx_clk_hw_gate("clkout1", "clkout1_div", anatop_base + 0x128, 8);
+	hws[IMX8MP_CLK_CLKOUT2_SEL] = imx_clk_hw_mux2("clkout2_sel", anatop_base + 0x128, 20, 4,
+						      imx8mp_clkout_sels, ARRAY_SIZE(imx8mp_clkout_sels));
+	hws[IMX8MP_CLK_CLKOUT2_DIV] = imx_clk_hw_divider("clkout2_div", "clkout2_sel", anatop_base + 0x128, 16, 4);
+	hws[IMX8MP_CLK_CLKOUT2] = imx_clk_hw_gate("clkout2", "clkout2_div", anatop_base + 0x128, 24);
+
 	hws[IMX8MP_CLK_A53_DIV] = imx8m_clk_hw_composite_core("arm_a53_div", imx8mp_a53_sels, ccm_base + 0x8000);
 	hws[IMX8MP_CLK_A53_SRC] = hws[IMX8MP_CLK_A53_DIV];
 	hws[IMX8MP_CLK_A53_CG] = hws[IMX8MP_CLK_A53_DIV];
@@ -522,9 +536,9 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	/* CORE SEL */
 	hws[IMX8MP_CLK_A53_CORE] = imx_clk_hw_mux2("arm_a53_core", ccm_base + 0x9880, 24, 1, imx8mp_a53_core_sels, ARRAY_SIZE(imx8mp_a53_core_sels));
 
-	hws[IMX8MP_CLK_MAIN_AXI] = imx8m_clk_hw_composite_critical("main_axi", imx8mp_main_axi_sels, ccm_base + 0x8800);
+	hws[IMX8MP_CLK_MAIN_AXI] = imx8m_clk_hw_composite_bus_critical("main_axi", imx8mp_main_axi_sels, ccm_base + 0x8800);
 	hws[IMX8MP_CLK_ENET_AXI] = imx8m_clk_hw_composite_bus("enet_axi", imx8mp_enet_axi_sels, ccm_base + 0x8880);
-	hws[IMX8MP_CLK_NAND_USDHC_BUS] = imx8m_clk_hw_composite_critical("nand_usdhc_bus", imx8mp_nand_usdhc_sels, ccm_base + 0x8900);
+	hws[IMX8MP_CLK_NAND_USDHC_BUS] = imx8m_clk_hw_composite("nand_usdhc_bus", imx8mp_nand_usdhc_sels, ccm_base + 0x8900);
 	hws[IMX8MP_CLK_VPU_BUS] = imx8m_clk_hw_composite_bus("vpu_bus", imx8mp_vpu_bus_sels, ccm_base + 0x8980);
 	hws[IMX8MP_CLK_MEDIA_AXI] = imx8m_clk_hw_composite_bus("media_axi", imx8mp_media_axi_sels, ccm_base + 0x8a00);
 	hws[IMX8MP_CLK_MEDIA_APB] = imx8m_clk_hw_composite_bus("media_apb", imx8mp_media_apb_sels, ccm_base + 0x8a80);
@@ -532,14 +546,15 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_HDMI_AXI] = imx8m_clk_hw_composite_bus("hdmi_axi", imx8mp_media_axi_sels, ccm_base + 0x8b80);
 	hws[IMX8MP_CLK_GPU_AXI] = imx8m_clk_hw_composite_bus("gpu_axi", imx8mp_gpu_axi_sels, ccm_base + 0x8c00);
 	hws[IMX8MP_CLK_GPU_AHB] = imx8m_clk_hw_composite_bus("gpu_ahb", imx8mp_gpu_ahb_sels, ccm_base + 0x8c80);
-	hws[IMX8MP_CLK_NOC] = imx8m_clk_hw_composite_critical("noc", imx8mp_noc_sels, ccm_base + 0x8d00);
-	hws[IMX8MP_CLK_NOC_IO] = imx8m_clk_hw_composite_critical("noc_io", imx8mp_noc_io_sels, ccm_base + 0x8d80);
+	hws[IMX8MP_CLK_NOC] = imx8m_clk_hw_composite_bus_critical("noc", imx8mp_noc_sels, ccm_base + 0x8d00);
+	hws[IMX8MP_CLK_NOC_IO] = imx8m_clk_hw_composite_bus_critical("noc_io", imx8mp_noc_io_sels, ccm_base + 0x8d80);
 	hws[IMX8MP_CLK_ML_AXI] = imx8m_clk_hw_composite_bus("ml_axi", imx8mp_ml_axi_sels, ccm_base + 0x8e00);
 	hws[IMX8MP_CLK_ML_AHB] = imx8m_clk_hw_composite_bus("ml_ahb", imx8mp_ml_ahb_sels, ccm_base + 0x8e80);
 
-	hws[IMX8MP_CLK_AHB] = imx8m_clk_hw_composite_critical("ahb_root", imx8mp_ahb_sels, ccm_base + 0x9000);
+	hws[IMX8MP_CLK_AHB] = imx8m_clk_hw_composite_bus_critical("ahb_root", imx8mp_ahb_sels, ccm_base + 0x9000);
 	hws[IMX8MP_CLK_AUDIO_AHB] = imx8m_clk_hw_composite_bus("audio_ahb", imx8mp_audio_ahb_sels, ccm_base + 0x9100);
 	hws[IMX8MP_CLK_MIPI_DSI_ESC_RX] = imx8m_clk_hw_composite_bus("mipi_dsi_esc_rx", imx8mp_mipi_dsi_esc_rx_sels, ccm_base + 0x9200);
+	hws[IMX8MP_CLK_MEDIA_DISP2_PIX] = imx8m_clk_hw_composite_bus("media_disp2_pix", imx8mp_media_disp_pix_sels, ccm_base + 0x9300);
 
 	hws[IMX8MP_CLK_IPG_ROOT] = imx_clk_hw_divider2("ipg_root", "ahb_root", ccm_base + 0x9080, 0, 1);
 
@@ -549,7 +564,6 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_VPU_G2] = imx8m_clk_hw_composite("vpu_g2", imx8mp_vpu_g2_sels, ccm_base + 0xa180);
 	hws[IMX8MP_CLK_CAN1] = imx8m_clk_hw_composite("can1", imx8mp_can1_sels, ccm_base + 0xa200);
 	hws[IMX8MP_CLK_CAN2] = imx8m_clk_hw_composite("can2", imx8mp_can2_sels, ccm_base + 0xa280);
-	hws[IMX8MP_CLK_MEMREPAIR] = imx8m_clk_hw_composite("memrepair", imx8mp_memrepair_sels, ccm_base + 0xa300);
 	hws[IMX8MP_CLK_PCIE_AUX] = imx8m_clk_hw_composite("pcie_aux", imx8mp_pcie_aux_sels, ccm_base + 0xa400);
 	hws[IMX8MP_CLK_I2C5] = imx8m_clk_hw_composite("i2c5", imx8mp_i2c5_sels, ccm_base + 0xa480);
 	hws[IMX8MP_CLK_I2C6] = imx8m_clk_hw_composite("i2c6", imx8mp_i2c6_sels, ccm_base + 0xa500);
@@ -602,10 +616,10 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_USDHC3] = imx8m_clk_hw_composite("usdhc3", imx8mp_usdhc3_sels, ccm_base + 0xbc80);
 	hws[IMX8MP_CLK_MEDIA_CAM1_PIX] = imx8m_clk_hw_composite("media_cam1_pix", imx8mp_media_cam1_pix_sels, ccm_base + 0xbd00);
 	hws[IMX8MP_CLK_MEDIA_MIPI_PHY1_REF] = imx8m_clk_hw_composite("media_mipi_phy1_ref", imx8mp_media_mipi_phy1_ref_sels, ccm_base + 0xbd80);
-	hws[IMX8MP_CLK_MEDIA_DISP1_PIX] = imx8m_clk_hw_composite("media_disp1_pix", imx8mp_media_disp1_pix_sels, ccm_base + 0xbe00);
+	hws[IMX8MP_CLK_MEDIA_DISP1_PIX] = imx8m_clk_hw_composite("media_disp1_pix", imx8mp_media_disp_pix_sels, ccm_base + 0xbe00);
 	hws[IMX8MP_CLK_MEDIA_CAM2_PIX] = imx8m_clk_hw_composite("media_cam2_pix", imx8mp_media_cam2_pix_sels, ccm_base + 0xbe80);
 	hws[IMX8MP_CLK_MEDIA_LDB] = imx8m_clk_hw_composite("media_ldb", imx8mp_media_ldb_sels, ccm_base + 0xbf00);
-	hws[IMX8MP_CLK_MEDIA_MIPI_CSI2_ESC] = imx8m_clk_hw_composite("media_mipi_csi2_esc", imx8mp_media_mipi_csi2_esc_sels, ccm_base + 0xbf80);
+	hws[IMX8MP_CLK_MEMREPAIR] = imx8m_clk_hw_composite_critical("mem_repair", imx8mp_memrepair_sels, ccm_base + 0xbf80);
 	hws[IMX8MP_CLK_MEDIA_MIPI_TEST_BYTE] = imx8m_clk_hw_composite("media_mipi_test_byte", imx8mp_media_mipi_test_byte_sels, ccm_base + 0xc100);
 	hws[IMX8MP_CLK_ECSPI3] = imx8m_clk_hw_composite("ecspi3", imx8mp_ecspi3_sels, ccm_base + 0xc180);
 	hws[IMX8MP_CLK_PDM] = imx8m_clk_hw_composite("pdm", imx8mp_pdm_sels, ccm_base + 0xc200);
@@ -635,6 +649,7 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_I2C2_ROOT] = imx_clk_hw_gate4("i2c2_root_clk", "i2c2", ccm_base + 0x4180, 0);
 	hws[IMX8MP_CLK_I2C3_ROOT] = imx_clk_hw_gate4("i2c3_root_clk", "i2c3", ccm_base + 0x4190, 0);
 	hws[IMX8MP_CLK_I2C4_ROOT] = imx_clk_hw_gate4("i2c4_root_clk", "i2c4", ccm_base + 0x41a0, 0);
+	hws[IMX8MP_CLK_MU_ROOT] = imx_clk_hw_gate4("mu_root_clk", "ipg_root", ccm_base + 0x4210, 0);
 	hws[IMX8MP_CLK_OCOTP_ROOT] = imx_clk_hw_gate4("ocotp_root_clk", "ipg_root", ccm_base + 0x4220, 0);
 	hws[IMX8MP_CLK_PCIE_ROOT] = imx_clk_hw_gate4("pcie_root_clk", "pcie_aux", ccm_base + 0x4250, 0);
 	hws[IMX8MP_CLK_PWM1_ROOT] = imx_clk_hw_gate4("pwm1_root_clk", "pwm1", ccm_base + 0x4280, 0);
@@ -644,24 +659,23 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_QOS_ROOT] = imx_clk_hw_gate4("qos_root_clk", "ipg_root", ccm_base + 0x42c0, 0);
 	hws[IMX8MP_CLK_QOS_ENET_ROOT] = imx_clk_hw_gate4("qos_enet_root_clk", "ipg_root", ccm_base + 0x42e0, 0);
 	hws[IMX8MP_CLK_QSPI_ROOT] = imx_clk_hw_gate4("qspi_root_clk", "qspi", ccm_base + 0x42f0, 0);
-	hws[IMX8MP_CLK_NAND_ROOT] = imx_clk_hw_gate2_shared2("nand_root_clk", "nand", ccm_base + 0x4300, 0);
-	hws[IMX8MP_CLK_NAND_USDHC_BUS_RAWNAND_CLK] = imx_clk_hw_gate2_shared2("nand_usdhc_rawnand_clk", "nand_usdhc_bus", ccm_base + 0x4300, 0);
+	hws[IMX8MP_CLK_NAND_ROOT] = imx_clk_hw_gate2_shared2("nand_root_clk", "nand", ccm_base + 0x4300, 0, &share_count_nand);
+	hws[IMX8MP_CLK_NAND_USDHC_BUS_RAWNAND_CLK] = imx_clk_hw_gate2_shared2("nand_usdhc_rawnand_clk", "nand_usdhc_bus", ccm_base + 0x4300, 0, &share_count_nand);
 	hws[IMX8MP_CLK_I2C5_ROOT] = imx_clk_hw_gate2("i2c5_root_clk", "i2c5", ccm_base + 0x4330, 0);
 	hws[IMX8MP_CLK_I2C6_ROOT] = imx_clk_hw_gate2("i2c6_root_clk", "i2c6", ccm_base + 0x4340, 0);
 	hws[IMX8MP_CLK_CAN1_ROOT] = imx_clk_hw_gate2("can1_root_clk", "can1", ccm_base + 0x4350, 0);
 	hws[IMX8MP_CLK_CAN2_ROOT] = imx_clk_hw_gate2("can2_root_clk", "can2", ccm_base + 0x4360, 0);
 	hws[IMX8MP_CLK_SDMA1_ROOT] = imx_clk_hw_gate4("sdma1_root_clk", "ipg_root", ccm_base + 0x43a0, 0);
-	hws[IMX8MP_CLK_ENET_QOS_ROOT] = imx_clk_hw_gate4("enet_qos_root_clk", "sim_enet_root_clk", ccm_base + 0x43b0, 0);
 	hws[IMX8MP_CLK_SIM_ENET_ROOT] = imx_clk_hw_gate4("sim_enet_root_clk", "enet_axi", ccm_base + 0x4400, 0);
+	hws[IMX8MP_CLK_ENET_QOS_ROOT] = imx_clk_hw_gate4("enet_qos_root_clk", "sim_enet_root_clk", ccm_base + 0x43b0, 0);
 	hws[IMX8MP_CLK_GPU2D_ROOT] = imx_clk_hw_gate4("gpu2d_root_clk", "gpu2d_core", ccm_base + 0x4450, 0);
 	hws[IMX8MP_CLK_GPU3D_ROOT] = imx_clk_hw_gate4("gpu3d_root_clk", "gpu3d_core", ccm_base + 0x4460, 0);
-	hws[IMX8MP_CLK_SNVS_ROOT] = imx_clk_hw_gate4("snvs_root_clk", "ipg_root", ccm_base + 0x4470, 0);
 	hws[IMX8MP_CLK_UART1_ROOT] = imx_clk_hw_gate4("uart1_root_clk", "uart1", ccm_base + 0x4490, 0);
 	hws[IMX8MP_CLK_UART2_ROOT] = imx_clk_hw_gate4("uart2_root_clk", "uart2", ccm_base + 0x44a0, 0);
 	hws[IMX8MP_CLK_UART3_ROOT] = imx_clk_hw_gate4("uart3_root_clk", "uart3", ccm_base + 0x44b0, 0);
 	hws[IMX8MP_CLK_UART4_ROOT] = imx_clk_hw_gate4("uart4_root_clk", "uart4", ccm_base + 0x44c0, 0);
-	hws[IMX8MP_CLK_USB_ROOT] = imx_clk_hw_gate2_shared2("usb_root_clk", "hsio_axi", ccm_base + 0x44d0, 0);
-	hws[IMX8MP_CLK_USB_SUSP] = imx_clk_hw_gate2_shared2("usb_suspend_clk", "osc_32k", ccm_base + 0x44d0, 0);
+	hws[IMX8MP_CLK_USB_ROOT] = imx_clk_hw_gate2_shared2("usb_root_clk", "hsio_axi", ccm_base + 0x44d0, 0, &share_count_usb);
+	hws[IMX8MP_CLK_USB_SUSP] = imx_clk_hw_gate2_shared2("usb_suspend_clk", "osc_32k", ccm_base + 0x44d0, 0, &share_count_usb);
 	hws[IMX8MP_CLK_USB_PHY_ROOT] = imx_clk_hw_gate4("usb_phy_root_clk", "usb_phy_ref", ccm_base + 0x44f0, 0);
 	hws[IMX8MP_CLK_USDHC1_ROOT] = imx_clk_hw_gate4("usdhc1_root_clk", "usdhc1", ccm_base + 0x4510, 0);
 	hws[IMX8MP_CLK_USDHC2_ROOT] = imx_clk_hw_gate4("usdhc2_root_clk", "usdhc2", ccm_base + 0x4520, 0);
@@ -674,19 +688,30 @@ static int imx8mp_clocks_init(struct device_node *ccm_np)
 	hws[IMX8MP_CLK_VPU_G2_ROOT] = imx_clk_hw_gate4("vpu_g2_root_clk", "vpu_g2", ccm_base + 0x45a0, 0);
 	hws[IMX8MP_CLK_NPU_ROOT] = imx_clk_hw_gate4("npu_root_clk", "ml_core", ccm_base + 0x45b0, 0);
 	hws[IMX8MP_CLK_HSIO_ROOT] = imx_clk_hw_gate4("hsio_root_clk", "ipg_root", ccm_base + 0x45c0, 0);
-	hws[IMX8MP_CLK_MEDIA_APB_ROOT] = imx_clk_hw_gate2_shared2("media_apb_root_clk", "media_apb", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_AXI_ROOT] = imx_clk_hw_gate2_shared2("media_axi_root_clk", "media_axi", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_CAM1_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_cam1_pix_root_clk", "media_cam1_pix", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_CAM2_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_cam2_pix_root_clk", "media_cam2_pix", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_DISP1_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_disp1_pix_root_clk", "media_disp1_pix", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_DISP2_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_disp2_pix_root_clk", "media_disp2_pix", ccm_base + 0x45d0, 0);
-	hws[IMX8MP_CLK_MEDIA_ISP_ROOT] = imx_clk_hw_gate2_shared2("media_isp_root_clk", "media_isp", ccm_base + 0x45d0, 0);
+	hws[IMX8MP_CLK_MEDIA_APB_ROOT] = imx_clk_hw_gate2_shared2("media_apb_root_clk", "media_apb", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_AXI_ROOT] = imx_clk_hw_gate2_shared2("media_axi_root_clk", "media_axi", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_CAM1_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_cam1_pix_root_clk", "media_cam1_pix", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_CAM2_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_cam2_pix_root_clk", "media_cam2_pix", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_DISP1_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_disp1_pix_root_clk", "media_disp1_pix", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_DISP2_PIX_ROOT] = imx_clk_hw_gate2_shared2("media_disp2_pix_root_clk", "media_disp2_pix", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_MIPI_PHY1_REF_ROOT] = imx_clk_hw_gate2_shared2("media_mipi_phy1_ref_root", "media_mipi_phy1_ref", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_LDB_ROOT] = imx_clk_hw_gate2_shared2("media_ldb_root_clk", "media_ldb", ccm_base + 0x45d0, 0, &share_count_media);
+	hws[IMX8MP_CLK_MEDIA_ISP_ROOT] = imx_clk_hw_gate2_shared2("media_isp_root_clk", "media_isp", ccm_base + 0x45d0, 0, &share_count_media);
 
 	hws[IMX8MP_CLK_USDHC3_ROOT] = imx_clk_hw_gate4("usdhc3_root_clk", "usdhc3", ccm_base + 0x45e0, 0);
 	hws[IMX8MP_CLK_HDMI_ROOT] = imx_clk_hw_gate4("hdmi_root_clk", "hdmi_axi", ccm_base + 0x45f0, 0);
 	hws[IMX8MP_CLK_TSENSOR_ROOT] = imx_clk_hw_gate4("tsensor_root_clk", "ipg_root", ccm_base + 0x4620, 0);
 	hws[IMX8MP_CLK_VPU_ROOT] = imx_clk_hw_gate4("vpu_root_clk", "vpu_bus", ccm_base + 0x4630, 0);
-	hws[IMX8MP_CLK_AUDIO_ROOT] = imx_clk_hw_gate4("audio_root_clk", "ipg_root", ccm_base + 0x4650, 0);
+
+	hws[IMX8MP_CLK_AUDIO_AHB_ROOT] = imx_clk_hw_gate2_shared2("audio_ahb_root", "audio_ahb", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_AUDIO_AXI_ROOT] = imx_clk_hw_gate2_shared2("audio_axi_root", "audio_axi", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI1_ROOT] = imx_clk_hw_gate2_shared2("sai1_root", "sai1", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI2_ROOT] = imx_clk_hw_gate2_shared2("sai2_root", "sai2", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI3_ROOT] = imx_clk_hw_gate2_shared2("sai3_root", "sai3", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI5_ROOT] = imx_clk_hw_gate2_shared2("sai5_root", "sai5", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI6_ROOT] = imx_clk_hw_gate2_shared2("sai6_root", "sai6", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_SAI7_ROOT] = imx_clk_hw_gate2_shared2("sai7_root", "sai7", ccm_base + 0x4650, 0, &share_count_audio);
+	hws[IMX8MP_CLK_PDM_ROOT] = imx_clk_hw_gate2_shared2("pdm_root", "pdm", ccm_base + 0x4650, 0, &share_count_audio);
 
 	hws[IMX8MP_CLK_ARM] = imx_clk_hw_cpu("arm", "arm_a53_core",
 					     hws[IMX8MP_CLK_A53_CORE],
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 00dc72831f38..32e4903837f5 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -278,6 +278,8 @@ struct clk *imx_clk_cpu(const char *name, const char *parent_name,
 
 #define IMX_COMPOSITE_CLK_FLAGS_DEFAULT \
 	(CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+#define IMX_COMPOSITE_CLK_FLAGS_CRITICAL \
+	(IMX_COMPOSITE_CLK_FLAGS_DEFAULT | CLK_IS_CRITICAL)
 
 struct clk *imx8m_clk_composite_flags(const char *name,
 		const char * const *parent_names, int num_parents, void __iomem *reg,
@@ -296,6 +298,12 @@ struct clk *imx8m_clk_composite_flags(const char *name,
                         IMX_COMPOSITE_BUS, \
                         IMX_COMPOSITE_CLK_FLAGS_DEFAULT)
 
+#define imx8m_clk_hw_composite_bus_critical(name, parent_names, reg)	\
+        imx8m_clk_hw_composite_flags(name, parent_names, \
+                        ARRAY_SIZE(parent_names), reg, \
+                        IMX_COMPOSITE_BUS, \
+                        IMX_COMPOSITE_CLK_FLAGS_CRITICAL)
+
 #define __imx8m_clk_composite(name, parent_names, reg, flags) \
 		imx8m_clk_composite_flags(name, parent_names, \
 			ARRAY_SIZE(parent_names), reg, 0, \
@@ -333,6 +341,7 @@ struct clk *imx93_clk_gate(struct device *dev, const char *name, const char *par
 #define imx_clk_hw_gate imx_clk_gate
 #define imx_clk_hw_fixed_factor imx_clk_fixed_factor
 #define imx_clk_hw_mux_flags imx_clk_mux_flags
+#define imx_clk_hw_divider imx_clk_divider
 #define imx_clk_hw_divider2 imx_clk_divider2
 #define imx_clk_hw_mux2_flags imx_clk_mux2_flags
 #define imx_clk_hw_gate4_flags imx_clk_gate4_flags
@@ -342,7 +351,8 @@ struct clk *imx93_clk_gate(struct device *dev, const char *name, const char *par
 #define imx8m_clk_hw_composite_flags imx8m_clk_composite_flags
 #define imx8m_clk_hw_composite imx8m_clk_composite
 #define imx8m_clk_hw_composite_critical imx8m_clk_composite_critical
-#define imx_clk_hw_gate2_shared2 imx_clk_gate2_shared2
+#define imx_clk_hw_gate2_shared2(name, parent, reg, shift, shared_count) \
+	({ (void)shared_count; imx_clk_gate2_shared2(name, parent, reg, shift); })
 #define imx_clk_hw_mux2 imx_clk_mux2
 
 #endif /* __IMX_CLK_H */
-- 
2.39.2

Re: [PATCH master 0/3] clk: imx: composite-8m: fix muxing of core and bus

[Sascha Hauer]

On Fri, 19 Apr 2024 08:10:00 +0200, Ahmad Fatoum wrote:
> The i.MX8M differntiates between three types of composite clocks (called
> slices): Core, Bus and IP (peripheral) clocks. How muxes are configured
> differs between these clocks, so the driver is populating a mux_ops
> variable to point at the correct struct clk_ops.
> 
> Unfortunately, mux_ops wasn't actually used, leading to barebox hangs,
> depending on the assigned-clock-parents properties in the device tree.
> 
> [...]

Applied, thanks!

[1/3] clk: imx: add IMX_COMPOSITE_CLK_FLAGS_DEFAULT macro
      https://git.pengutronix.de/cgit/barebox/commit/?id=fb6c852f5b87 (link may not be stable)
[2/3] clk: imx: composite-8m: fix muxing of core and bus clocks
      https://git.pengutronix.de/cgit/barebox/commit/?id=4ec1f1d2887f (link may not be stable)
[3/3] clk: imx: imx8mp: sync with Linux v6.9-rc3
      https://git.pengutronix.de/cgit/barebox/commit/?id=ed8dad10eac8 (link may not be stable)

Best regards,
-- 
Sascha Hauer <s.hauer@pengutronix.de>