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PCI: rockchip: Simplify clock handling by using clk_bulk*() function

PATCH Superseded Anand Moon 2 participants 7 messages Jun 18, 2024 – Jun 20, 2024 1 message not in the archive

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v1 of 11 Superseded Latest is v11 →

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Anand Moon

author
#1 lore raw

PATCH 1/3 PCI: rockchip: Simplify clock handling by using clk_bulk*() function

Refactors the clock handling in the Rockchip PCIe driver, introducing a more robust and efficient method for enabling and disabling clocks using clk_bulk*() API. Using the clk_bulk APIs, the clock handling for the core clocks becomes much simpler.

---
 drivers/pci/controller/pcie-rockchip.c | 64 ++++----------------------
 drivers/pci/controller/pcie-rockchip.h | 14 ++++--
 2 files changed, 20 insertions(+), 58 deletions(-)
drivers/pci/controller/pcie-rockchip.c +10 -54
index 0ef2e622d36e..166dad666a35 100644
@@ -30,7 +30,7 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct device_node *node = dev->of_node;
 	struct resource *regs;
-	int err;
+	int err, i;
 
 	if (rockchip->is_rc) {
 		regs = platform_get_resource_byname(pdev,
@@ -127,28 +127,13 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
 					     "failed to get ep GPIO\n");
 	}
 
-	rockchip->aclk_pcie = devm_clk_get(dev, "aclk");
-	if (IS_ERR(rockchip->aclk_pcie)) {
-		dev_err(dev, "aclk clock not found\n");
-		return PTR_ERR(rockchip->aclk_pcie);
-	}
-
-	rockchip->aclk_perf_pcie = devm_clk_get(dev, "aclk-perf");
-	if (IS_ERR(rockchip->aclk_perf_pcie)) {
-		dev_err(dev, "aclk_perf clock not found\n");
-		return PTR_ERR(rockchip->aclk_perf_pcie);
-	}
-
-	rockchip->hclk_pcie = devm_clk_get(dev, "hclk");
-	if (IS_ERR(rockchip->hclk_pcie)) {
-		dev_err(dev, "hclk clock not found\n");
-		return PTR_ERR(rockchip->hclk_pcie);
-	}
+	for (i = 0; i < ROCKCHIP_NUM_CLKS; i++)
+		rockchip->clks[i].id = rockchip_pci_clks[i];
 
-	rockchip->clk_pcie_pm = devm_clk_get(dev, "pm");
-	if (IS_ERR(rockchip->clk_pcie_pm)) {
-		dev_err(dev, "pm clock not found\n");
-		return PTR_ERR(rockchip->clk_pcie_pm);
+	err = devm_clk_bulk_get(dev, ROCKCHIP_NUM_CLKS, rockchip->clks);
+	if (err) {
+		dev_err(dev, "rockchip clk bulk get failed\n");
+		return err;
 	}
 
 	return 0;
@@ -372,39 +357,13 @@ int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip)
 	struct device *dev = rockchip->dev;
 	int err;
 
-	err = clk_prepare_enable(rockchip->aclk_pcie);
+	err = clk_bulk_prepare_enable(ROCKCHIP_NUM_CLKS, rockchip->clks);
 	if (err) {
-		dev_err(dev, "unable to enable aclk_pcie clock\n");
+		dev_err(dev, "rockchip clk bulk prepare enable failed\n");
 		return err;
 	}
 
-	err = clk_prepare_enable(rockchip->aclk_perf_pcie);
-	if (err) {
-		dev_err(dev, "unable to enable aclk_perf_pcie clock\n");
-		goto err_aclk_perf_pcie;
-	}
-
-	err = clk_prepare_enable(rockchip->hclk_pcie);
-	if (err) {
-		dev_err(dev, "unable to enable hclk_pcie clock\n");
-		goto err_hclk_pcie;
-	}
-
-	err = clk_prepare_enable(rockchip->clk_pcie_pm);
-	if (err) {
-		dev_err(dev, "unable to enable clk_pcie_pm clock\n");
-		goto err_clk_pcie_pm;
-	}
-
 	return 0;
-
-err_clk_pcie_pm:
-	clk_disable_unprepare(rockchip->hclk_pcie);
-err_hclk_pcie:
-	clk_disable_unprepare(rockchip->aclk_perf_pcie);
-err_aclk_perf_pcie:
-	clk_disable_unprepare(rockchip->aclk_pcie);
-	return err;
 }
 EXPORT_SYMBOL_GPL(rockchip_pcie_enable_clocks);
 
@@ -412,10 +371,7 @@ void rockchip_pcie_disable_clocks(void *data)
 {
 	struct rockchip_pcie *rockchip = data;
 
-	clk_disable_unprepare(rockchip->clk_pcie_pm);
-	clk_disable_unprepare(rockchip->hclk_pcie);
-	clk_disable_unprepare(rockchip->aclk_perf_pcie);
-	clk_disable_unprepare(rockchip->aclk_pcie);
+	clk_bulk_disable_unprepare(ROCKCHIP_NUM_CLKS, rockchip->clks);
 }
 EXPORT_SYMBOL_GPL(rockchip_pcie_disable_clocks);
 
drivers/pci/controller/pcie-rockchip.h +10 -4
index 6111de35f84c..f256cdf4fa49 100644
@@ -287,6 +287,15 @@
 		(((c) << ((b) * 8 + 5)) & \
 		 ROCKCHIP_PCIE_CORE_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b))
 
+#define ROCKCHIP_NUM_CLKS	ARRAY_SIZE(rockchip_pci_clks)
+
+static const char * const rockchip_pci_clks[] = {
+	"aclk",
+	"aclk-perf",
+	"hclk",
+	"pm",
+};
+
 struct rockchip_pcie {
 	void	__iomem *reg_base;		/* DT axi-base */
 	void	__iomem *apb_base;		/* DT apb-base */
@@ -299,10 +308,7 @@ struct rockchip_pcie {
 	struct	reset_control *pm_rst;
 	struct	reset_control *aclk_rst;
 	struct	reset_control *pclk_rst;
-	struct	clk *aclk_pcie;
-	struct	clk *aclk_perf_pcie;
-	struct	clk *hclk_pcie;
-	struct	clk *clk_pcie_pm;
+	struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
 	struct	regulator *vpcie12v; /* 12V power supply */
 	struct	regulator *vpcie3v3; /* 3.3V power supply */
 	struct	regulator *vpcie1v8; /* 1.8V power supply */
Signature · 1 line
2.44.0
#2 lore raw
kernel test robot noticed the following build errors:

Hi Anand,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.10-rc4 next-20240619] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anand-Moon/PCI-rockchip-Simplify-reset-control-handling-by-using-reset_control_bulk-function/20240619-014145
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20240618164133.223194-2-linux.amoon%40gmail.com
patch subject: [PATCH v1 1/3] PCI: rockchip: Simplify clock handling by using clk_bulk*() function
config: arc-randconfig-001-20240620 (https://download.01.org/0day-ci/archive/20240620/[email protected]/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240620/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

In file included from drivers/pci/controller/pcie-rockchip-ep.c:20:

>> drivers/pci/controller/pcie-rockchip.h:311:31: error: array type has incomplete element type 'struct clk_bulk_data'
     311 |         struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
         |                               ^~~~

vim +311 drivers/pci/controller/pcie-rockchip.h

298
299 struct rockchip_pcie {
300 void __iomem *reg_base; /* DT axi-base */
301 void __iomem *apb_base; /* DT apb-base */
302 bool legacy_phy;
303 struct phy *phys[MAX_LANE_NUM];
304 struct reset_control *core_rst;
305 struct reset_control *mgmt_rst;
306 struct reset_control *mgmt_sticky_rst;
307 struct reset_control *pipe_rst;
308 struct reset_control *pm_rst;
309 struct reset_control *aclk_rst;
310 struct reset_control *pclk_rst;

 > 311		struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];

312 struct regulator *vpcie12v; /* 12V power supply */
313 struct regulator *vpcie3v3; /* 3.3V power supply */
314 struct regulator *vpcie1v8; /* 1.8V power supply */
315 struct regulator *vpcie0v9; /* 0.9V power supply */
316 struct gpio_desc *ep_gpio;
317 u32 lanes;
318 u8 lanes_map;
319 int link_gen;
320 struct device *dev;
321 struct irq_domain *irq_domain;
322 int offset;
323 void __iomem *msg_region;
324 phys_addr_t msg_bus_addr;
325 bool is_rc;
326 struct resource *mem_res;
327 };
328

Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
author
#3 lore raw

Hi All,

Quoted 24 lines · kernel test robot

Hi Anand,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.10-rc4 next-20240619] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anand-Moon/PCI-rockchip-Simplify-reset-control-handling-by-using-reset_control_bulk-function/20240619-014145
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20240618164133.223194-2-linux.amoon%40gmail.com
patch subject: [PATCH v1 1/3] PCI: rockchip: Simplify clock handling by using clk_bulk*() function
config: arc-randconfig-001-20240620 (https://download.01.org/0day-ci/archive/20240620/[email protected]/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240620/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

Quoted 7 lines

All errors (new ones prefixed by >>):

In file included from drivers/pci/controller/pcie-rockchip-ep.c:20:

Quoted 1 line
Quoted 1 line

drivers/pci/controller/pcie-rockchip.h:311:31: error: array type has incomplete element type 'struct clk_bulk_data'

     311 |         struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
         |                               ^~~~

I will try to fix this issue in the next version, once I get more feedback on the rest of the changes.

Quoted 35 lines

vim +311 drivers/pci/controller/pcie-rockchip.h

   298
   299  struct rockchip_pcie {
   300          void    __iomem *reg_base;              /* DT axi-base */
   301          void    __iomem *apb_base;              /* DT apb-base */
   302          bool    legacy_phy;
   303          struct  phy *phys[MAX_LANE_NUM];
   304          struct  reset_control *core_rst;
   305          struct  reset_control *mgmt_rst;
   306          struct  reset_control *mgmt_sticky_rst;
   307          struct  reset_control *pipe_rst;
   308          struct  reset_control *pm_rst;
   309          struct  reset_control *aclk_rst;
   310          struct  reset_control *pclk_rst;
Quoted 1 line

311 struct clk_bulk_data clks[ROCKCHIP_NUM_CLKS];

   312          struct  regulator *vpcie12v; /* 12V power supply */
   313          struct  regulator *vpcie3v3; /* 3.3V power supply */
   314          struct  regulator *vpcie1v8; /* 1.8V power supply */
   315          struct  regulator *vpcie0v9; /* 0.9V power supply */
   316          struct  gpio_desc *ep_gpio;
   317          u32     lanes;
   318          u8      lanes_map;
   319          int     link_gen;
   320          struct  device *dev;
   321          struct  irq_domain *irq_domain;
   322          int     offset;
   323          void    __iomem *msg_region;
   324          phys_addr_t msg_bus_addr;
   325          bool is_rc;
   326          struct resource *mem_res;
   327  };
   328
Quoted 3 lines

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Thanks
-Anand

#4 lore raw
In reply to Anand Moon
kernel test robot noticed the following build errors:

Hi Anand,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.10-rc4 next-20240619] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anand-Moon/PCI-rockchip-Simplify-reset-control-handling-by-using-reset_control_bulk-function/20240619-014145
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20240618164133.223194-2-linux.amoon%40gmail.com
patch subject: [PATCH v1 1/3] PCI: rockchip: Simplify clock handling by using clk_bulk*() function
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240621/[email protected]/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240621/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

In file included from drivers/pci/controller/pcie-rockchip-ep.c:20:

>> drivers/pci/controller/pcie-rockchip.h:311:28: error: array has incomplete element type 'struct clk_bulk_data'
     311 |         struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
         |                                   ^
   drivers/pci/controller/pcie-rockchip.h:311:10: note: forward declaration of 'struct clk_bulk_data'
     311 |         struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
         |                 ^

1 error generated.

vim +311 drivers/pci/controller/pcie-rockchip.h

298
299 struct rockchip_pcie {
300 void __iomem *reg_base; /* DT axi-base */
301 void __iomem *apb_base; /* DT apb-base */
302 bool legacy_phy;
303 struct phy *phys[MAX_LANE_NUM];
304 struct reset_control *core_rst;
305 struct reset_control *mgmt_rst;
306 struct reset_control *mgmt_sticky_rst;
307 struct reset_control *pipe_rst;
308 struct reset_control *pm_rst;
309 struct reset_control *aclk_rst;
310 struct reset_control *pclk_rst;

 > 311		struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];

312 struct regulator *vpcie12v; /* 12V power supply */
313 struct regulator *vpcie3v3; /* 3.3V power supply */
314 struct regulator *vpcie1v8; /* 1.8V power supply */
315 struct regulator *vpcie0v9; /* 0.9V power supply */
316 struct gpio_desc *ep_gpio;
317 u32 lanes;
318 u8 lanes_map;
319 int link_gen;
320 struct device *dev;
321 struct irq_domain *irq_domain;
322 int offset;
323 void __iomem *msg_region;
324 phys_addr_t msg_bus_addr;
325 bool is_rc;
326 struct resource *mem_res;
327 };
328

Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
author
#5 lore raw

PATCH 2/3 PCI: rockchip: Simplify reset control handling by using reset_control_bulk*() function

In reply to a message not in the archive

Refactors the reset control clock handling in the Rockchip PCIe driver, introducing a more robust and efficient method for assert and deassert reset controller using reset_control_bulk*() API. Using the reset_control_bulk APIs, the reset handling for the core clocks reset unit becomes much simpler.

As per rockchip rk3399 TRM SOFTRST_CON8 soft reset controller have clock reset unit value set to 0x1 for example "pcie_pipe", "pcie_mgmt_sticky", "pcie_mgmt" and "pci_core", hence group then under one reset bulk controller.

Where as "pcie_pm", "presetn_pcie", "aresetn_pcie" have reset value set to 0x0 ,hence group them under reset control bulk controller.

---
 drivers/pci/controller/pcie-rockchip.c | 139 +++++--------------------
 drivers/pci/controller/pcie-rockchip.h |  24 +++--
 2 files changed, 44 insertions(+), 119 deletions(-)
drivers/pci/controller/pcie-rockchip.c +27 -112
index 166dad666a35..5154dfb1311b 100644
@@ -69,54 +69,24 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
 	if (rockchip->link_gen < 0 || rockchip->link_gen > 2)
 		rockchip->link_gen = 2;
 
-	rockchip->core_rst = devm_reset_control_get_exclusive(dev, "core");
-	if (IS_ERR(rockchip->core_rst)) {
-		if (PTR_ERR(rockchip->core_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing core reset property in node\n");
-		return PTR_ERR(rockchip->core_rst);
-	}
-
-	rockchip->mgmt_rst = devm_reset_control_get_exclusive(dev, "mgmt");
-	if (IS_ERR(rockchip->mgmt_rst)) {
-		if (PTR_ERR(rockchip->mgmt_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing mgmt reset property in node\n");
-		return PTR_ERR(rockchip->mgmt_rst);
-	}
-
-	rockchip->mgmt_sticky_rst = devm_reset_control_get_exclusive(dev,
-								"mgmt-sticky");
-	if (IS_ERR(rockchip->mgmt_sticky_rst)) {
-		if (PTR_ERR(rockchip->mgmt_sticky_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing mgmt-sticky reset property in node\n");
-		return PTR_ERR(rockchip->mgmt_sticky_rst);
-	}
-
-	rockchip->pipe_rst = devm_reset_control_get_exclusive(dev, "pipe");
-	if (IS_ERR(rockchip->pipe_rst)) {
-		if (PTR_ERR(rockchip->pipe_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing pipe reset property in node\n");
-		return PTR_ERR(rockchip->pipe_rst);
-	}
+	for (i = 0; i < ROCKCHIP_NUM_PM_RSTS; i++)
+		rockchip->pm_rsts[i].id = rockchip_pci_pm_rsts[i];
 
-	rockchip->pm_rst = devm_reset_control_get_exclusive(dev, "pm");
-	if (IS_ERR(rockchip->pm_rst)) {
-		if (PTR_ERR(rockchip->pm_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing pm reset property in node\n");
-		return PTR_ERR(rockchip->pm_rst);
+	err = devm_reset_control_bulk_get_optional_exclusive(dev,
+			ROCKCHIP_NUM_PM_RSTS, rockchip->pm_rsts);
+	if (err) {
+		dev_err(dev, "cannot get the devm_reset_control err %d\n", err);
+		return err;
 	}
 
-	rockchip->pclk_rst = devm_reset_control_get_exclusive(dev, "pclk");
-	if (IS_ERR(rockchip->pclk_rst)) {
-		if (PTR_ERR(rockchip->pclk_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing pclk reset property in node\n");
-		return PTR_ERR(rockchip->pclk_rst);
-	}
+	for (i = 0; i < ROCKCHIP_NUM_CORE_RSTS; i++)
+		rockchip->core_rsts[i].id = rockchip_pci_core_rsts[i];
 
-	rockchip->aclk_rst = devm_reset_control_get_exclusive(dev, "aclk");
-	if (IS_ERR(rockchip->aclk_rst)) {
-		if (PTR_ERR(rockchip->aclk_rst) != -EPROBE_DEFER)
-			dev_err(dev, "missing aclk reset property in node\n");
-		return PTR_ERR(rockchip->aclk_rst);
+	err = devm_reset_control_bulk_get_optional_exclusive(dev,
+			ROCKCHIP_NUM_CORE_RSTS, rockchip->core_rsts);
+	if (err) {
+		dev_err(dev, "cannot get the devm_reset_control err %d\n", err);
+		return err;
 	}
 
 	if (rockchip->is_rc) {
@@ -152,21 +122,10 @@ int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 	int err, i;
 	u32 regs;
 
-	err = reset_control_assert(rockchip->aclk_rst);
+	err = reset_control_bulk_assert(ROCKCHIP_NUM_PM_RSTS,
+			rockchip->pm_rsts);
 	if (err) {
-		dev_err(dev, "assert aclk_rst err %d\n", err);
-		return err;
-	}
-
-	err = reset_control_assert(rockchip->pclk_rst);
-	if (err) {
-		dev_err(dev, "assert pclk_rst err %d\n", err);
-		return err;
-	}
-
-	err = reset_control_assert(rockchip->pm_rst);
-	if (err) {
-		dev_err(dev, "assert pm_rst err %d\n", err);
+		dev_err(dev, "reset bulk assert pm_rsts err %d\n", err);
 		return err;
 	}
 
@@ -178,47 +137,19 @@ int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 		}
 	}
 
-	err = reset_control_assert(rockchip->core_rst);
+	err = reset_control_bulk_assert(ROCKCHIP_NUM_CORE_RSTS,
+			rockchip->core_rsts);
 	if (err) {
-		dev_err(dev, "assert core_rst err %d\n", err);
-		goto err_exit_phy;
-	}
-
-	err = reset_control_assert(rockchip->mgmt_rst);
-	if (err) {
-		dev_err(dev, "assert mgmt_rst err %d\n", err);
-		goto err_exit_phy;
-	}
-
-	err = reset_control_assert(rockchip->mgmt_sticky_rst);
-	if (err) {
-		dev_err(dev, "assert mgmt_sticky_rst err %d\n", err);
-		goto err_exit_phy;
-	}
-
-	err = reset_control_assert(rockchip->pipe_rst);
-	if (err) {
-		dev_err(dev, "assert pipe_rst err %d\n", err);
+		dev_err(dev, "reset bulk assert core_rsts err %d\n", err);
 		goto err_exit_phy;
 	}
 
 	udelay(10);
 
-	err = reset_control_deassert(rockchip->pm_rst);
-	if (err) {
-		dev_err(dev, "deassert pm_rst err %d\n", err);
-		goto err_exit_phy;
-	}
-
-	err = reset_control_deassert(rockchip->aclk_rst);
-	if (err) {
-		dev_err(dev, "deassert aclk_rst err %d\n", err);
-		goto err_exit_phy;
-	}
-
-	err = reset_control_deassert(rockchip->pclk_rst);
+	err = reset_control_bulk_deassert(ROCKCHIP_NUM_PM_RSTS,
+			rockchip->pm_rsts);
 	if (err) {
-		dev_err(dev, "deassert pclk_rst err %d\n", err);
+		dev_err(dev, "reset bulk deassert pm_rsts err %d\n", err);
 		goto err_exit_phy;
 	}
 
@@ -261,31 +192,15 @@ int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 	 * Please don't reorder the deassert sequence of the following
 	 * four reset pins.
 	 */
-	err = reset_control_deassert(rockchip->mgmt_sticky_rst);
+	err = reset_control_bulk_deassert(ROCKCHIP_NUM_CORE_RSTS,
+			rockchip->core_rsts);
 	if (err) {
-		dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err);
-		goto err_power_off_phy;
-	}
-
-	err = reset_control_deassert(rockchip->core_rst);
-	if (err) {
-		dev_err(dev, "deassert core_rst err %d\n", err);
-		goto err_power_off_phy;
-	}
-
-	err = reset_control_deassert(rockchip->mgmt_rst);
-	if (err) {
-		dev_err(dev, "deassert mgmt_rst err %d\n", err);
-		goto err_power_off_phy;
-	}
-
-	err = reset_control_deassert(rockchip->pipe_rst);
-	if (err) {
-		dev_err(dev, "deassert pipe_rst err %d\n", err);
+		dev_err(dev, "reset bulk deassert core_rsts err %d\n", err);
 		goto err_power_off_phy;
 	}
 
 	return 0;
+
 err_power_off_phy:
 	while (i--)
 		phy_power_off(rockchip->phys[i]);
drivers/pci/controller/pcie-rockchip.h +17 -7
index f256cdf4fa49..fceb6f526b72 100644
@@ -288,6 +288,8 @@
 		 ROCKCHIP_PCIE_CORE_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b))
 
 #define ROCKCHIP_NUM_CLKS	ARRAY_SIZE(rockchip_pci_clks)
+#define ROCKCHIP_NUM_PM_RSTS	ARRAY_SIZE(rockchip_pci_pm_rsts)
+#define ROCKCHIP_NUM_CORE_RSTS	ARRAY_SIZE(rockchip_pci_core_rsts)
 
 static const char * const rockchip_pci_clks[] = {
 	"aclk",
@@ -296,18 +298,26 @@ static const char * const rockchip_pci_clks[] = {
 	"pm",
 };
 
+static const char * const rockchip_pci_pm_rsts[] = {
+	"pm",
+	"pclk",
+	"aclk",
+};
+
+static const char * const rockchip_pci_core_rsts[] = {
+	"core",
+	"mgmt",
+	"mgmt-sticky",
+	"pipe",
+};
+
 struct rockchip_pcie {
 	void	__iomem *reg_base;		/* DT axi-base */
 	void	__iomem *apb_base;		/* DT apb-base */
 	bool    legacy_phy;
 	struct  phy *phys[MAX_LANE_NUM];
-	struct	reset_control *core_rst;
-	struct	reset_control *mgmt_rst;
-	struct	reset_control *mgmt_sticky_rst;
-	struct	reset_control *pipe_rst;
-	struct	reset_control *pm_rst;
-	struct	reset_control *aclk_rst;
-	struct	reset_control *pclk_rst;
+	struct  reset_control_bulk_data pm_rsts[ROCKCHIP_NUM_PM_RSTS];
+	struct  reset_control_bulk_data core_rsts[ROCKCHIP_NUM_CORE_RSTS];
 	struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
 	struct	regulator *vpcie12v; /* 12V power supply */
 	struct	regulator *vpcie3v3; /* 3.3V power supply */
Signature · 1 line
2.44.0
#6 lore raw

Re: [PATCH v1 2/3] PCI: rockchip: Simplify reset control handling by using reset_control_bulk*() function

kernel test robot noticed the following build errors:

Hi Anand,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.10-rc4 next-20240619] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anand-Moon/PCI-rockchip-Simplify-reset-control-handling-by-using-reset_control_bulk-function/20240619-014145
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20240618164133.223194-3-linux.amoon%40gmail.com
patch subject: [PATCH v1 2/3] PCI: rockchip: Simplify reset control handling by using reset_control_bulk*() function
config: arc-randconfig-001-20240620 (https://download.01.org/0day-ci/archive/20240620/[email protected]/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240620/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

In file included from drivers/pci/controller/pcie-rockchip-ep.c:20:

>> drivers/pci/controller/pcie-rockchip.h:319:41: error: array type has incomplete element type 'struct reset_control_bulk_data'
     319 |         struct  reset_control_bulk_data pm_rsts[ROCKCHIP_NUM_PM_RSTS];
         |                                         ^~~~~~~
   drivers/pci/controller/pcie-rockchip.h:320:41: error: array type has incomplete element type 'struct reset_control_bulk_data'
     320 |         struct  reset_control_bulk_data core_rsts[ROCKCHIP_NUM_CORE_RSTS];
         |                                         ^~~~~~~~~
   drivers/pci/controller/pcie-rockchip.h:321:31: error: array type has incomplete element type 'struct clk_bulk_data'
     321 |         struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];
         |                               ^~~~

vim +319 drivers/pci/controller/pcie-rockchip.h

313
314 struct rockchip_pcie {
315 void __iomem *reg_base; /* DT axi-base */
316 void __iomem *apb_base; /* DT apb-base */

   317		bool    legacy_phy;
   318		struct  phy *phys[MAX_LANE_NUM];
 > 319		struct  reset_control_bulk_data pm_rsts[ROCKCHIP_NUM_PM_RSTS];
   320		struct  reset_control_bulk_data core_rsts[ROCKCHIP_NUM_CORE_RSTS];
   321		struct  clk_bulk_data clks[ROCKCHIP_NUM_CLKS];

322 struct regulator *vpcie12v; /* 12V power supply */
323 struct regulator *vpcie3v3; /* 3.3V power supply */
324 struct regulator *vpcie1v8; /* 1.8V power supply */
325 struct regulator *vpcie0v9; /* 0.9V power supply */
326 struct gpio_desc *ep_gpio;
327 u32 lanes;
328 u8 lanes_map;
329 int link_gen;
330 struct device *dev;
331 struct irq_domain *irq_domain;
332 int offset;
333 void __iomem *msg_region;
334 phys_addr_t msg_bus_addr;
335 bool is_rc;
336 struct resource *mem_res;
337 };
338

Signature · 2 lines
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
author
#7 lore raw

PATCH 3/3 PCI: rockchip: refactor rockchip_pcie_disable_clocks function signature

In reply to a message not in the archive

Updated rockchip_pcie_disable_clocks function to accept a struct rockchip pointer instead of a void pointer.

---
 drivers/pci/controller/pcie-rockchip.c | 4 +---
 drivers/pci/controller/pcie-rockchip.h | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)
drivers/pci/controller/pcie-rockchip.c +1 -3
index 5154dfb1311b..79f625cba11c 100644
@@ -282,10 +282,8 @@ int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip)
 }
 EXPORT_SYMBOL_GPL(rockchip_pcie_enable_clocks);
 
-void rockchip_pcie_disable_clocks(void *data)
+void rockchip_pcie_disable_clocks(struct rockchip_pcie *rockchip)
 {
-	struct rockchip_pcie *rockchip = data;
-
 	clk_bulk_disable_unprepare(ROCKCHIP_NUM_CLKS, rockchip->clks);
 }
 EXPORT_SYMBOL_GPL(rockchip_pcie_disable_clocks);
drivers/pci/controller/pcie-rockchip.h +1 -1
index fceb6f526b72..6fe5c32af0ee 100644
@@ -352,7 +352,7 @@ int rockchip_pcie_init_port(struct rockchip_pcie *rockchip);
 int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip);
 void rockchip_pcie_deinit_phys(struct rockchip_pcie *rockchip);
 int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip);
-void rockchip_pcie_disable_clocks(void *data);
+void rockchip_pcie_disable_clocks(struct rockchip_pcie *rockchip);
 void rockchip_pcie_cfg_configuration_accesses(
 		struct rockchip_pcie *rockchip, u32 type);
 
Signature · 1 line
2.44.0