diff mbox

[v5,1/4] clk: rockchip: fix big.LITTLE cores alternate reparent failed

Message ID 1458974276-10325-2-git-send-email-zhengxing@rock-chips.com (mailing list archive)
State New, archived
Headers show

Commit Message

zhengxing March 26, 2016, 6:37 a.m. UTC
On the RK3399, the order of the core's parents are LPLL/BPLL/DPLL/GPLL,
there is incorrect to select bit_0 and bit_1 as the main and alternate
parents for LPLL/BPLL. They should be configurable.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
---

Changes in v5: None
Changes in v3: None
Changes in v2: None

 drivers/clk/rockchip/clk-cpu.c |   15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

Comments

kernel test robot March 26, 2016, 8:26 a.m. UTC | #1
Hi Xing,

[auto build test ERROR on rockchip/for-next]
[also build test ERROR on v4.5 next-20160324]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Xing-Zheng/clk-rockchip-fix-big-LITTLE-cores-alternate-reparent-failed/20160326-144243
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
config: arm-multi_v7_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   drivers/clk/rockchip/clk-cpu.c: In function 'rockchip_clk_register_cpuclk':
>> drivers/clk/rockchip/clk-cpu.c:255:44: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_main'
     init.parent_names = &parent_names[reg_data->mux_core_main];
                                               ^
>> drivers/clk/rockchip/clk-cpu.c:273:57: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_alt'
     cpuclk->alt_parent = __clk_lookup(parent_names[reg_data->mux_core_alt]);
                                                            ^
   In file included from include/linux/kernel.h:13:0,
                    from include/linux/list.h:8,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:21,
                    from drivers/clk/rockchip/clk-cpu.c:35:
   drivers/clk/rockchip/clk-cpu.c:276:28: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_alt'
             __func__, reg_data->mux_core_alt);
                               ^
   include/linux/printk.h:252:33: note: in definition of macro 'pr_err'
     printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
                                    ^
   drivers/clk/rockchip/clk-cpu.c:288:42: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_main'
     clk = __clk_lookup(parent_names[reg_data->mux_core_main]);
                                             ^
   In file included from include/linux/kernel.h:13:0,
                    from include/linux/list.h:8,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:21,
                    from drivers/clk/rockchip/clk-cpu.c:35:
   drivers/clk/rockchip/clk-cpu.c:291:28: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_main'
             __func__, reg_data->mux_core_main,
                               ^
   include/linux/printk.h:252:33: note: in definition of macro 'pr_err'
     printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
                                    ^
   drivers/clk/rockchip/clk-cpu.c:292:31: error: 'const struct rockchip_cpuclk_reg_data' has no member named 'mux_core_main'
             parent_names[reg_data->mux_core_main]);
                                  ^
   include/linux/printk.h:252:33: note: in definition of macro 'pr_err'
     printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
                                    ^

vim +255 drivers/clk/rockchip/clk-cpu.c

   249	
   250		cpuclk = kzalloc(sizeof(*cpuclk), GFP_KERNEL);
   251		if (!cpuclk)
   252			return ERR_PTR(-ENOMEM);
   253	
   254		init.name = name;
 > 255		init.parent_names = &parent_names[reg_data->mux_core_main];
   256		init.num_parents = 1;
   257		init.ops = &rockchip_cpuclk_ops;
   258	
   259		/* only allow rate changes when we have a rate table */
   260		init.flags = (nrates > 0) ? CLK_SET_RATE_PARENT : 0;
   261	
   262		/* disallow automatic parent changes by ccf */
   263		init.flags |= CLK_SET_RATE_NO_REPARENT;
   264	
   265		init.flags |= CLK_GET_RATE_NOCACHE;
   266	
   267		cpuclk->reg_base = reg_base;
   268		cpuclk->lock = lock;
   269		cpuclk->reg_data = reg_data;
   270		cpuclk->clk_nb.notifier_call = rockchip_cpuclk_notifier_cb;
   271		cpuclk->hw.init = &init;
   272	
 > 273		cpuclk->alt_parent = __clk_lookup(parent_names[reg_data->mux_core_alt]);
   274		if (!cpuclk->alt_parent) {
   275			pr_err("%s: could not lookup alternate parent: (%d)\n",
   276			       __func__, reg_data->mux_core_alt);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
Heiko Stübner March 27, 2016, 9:26 p.m. UTC | #2
Am Samstag, 26. März 2016, 14:37:53 schrieb Xing Zheng:
> On the RK3399, the order of the core's parents are LPLL/BPLL/DPLL/GPLL,
> there is incorrect to select bit_0 and bit_1 as the main and alternate
> parents for LPLL/BPLL. They should be configurable.
> 
> Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

I've folded this fix into the original patch [0]


Thanks
Heiko


[0] https://git.kernel.org/cgit/linux/kernel/git/mmind/linux-rockchip.git/commit/?h=v4.7-clk/next&id=268aebaa2410152bf91ea1ede6b284ff8138822d
diff mbox

Patch

diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c
index 5556849..4bb130c 100644
--- a/drivers/clk/rockchip/clk-cpu.c
+++ b/drivers/clk/rockchip/clk-cpu.c
@@ -258,7 +258,7 @@  struct clk *rockchip_clk_register_cpuclk(const char *name,
 		return ERR_PTR(-ENOMEM);
 
 	init.name = name;
-	init.parent_names = &parent_names[0];
+	init.parent_names = &parent_names[reg_data->mux_core_main];
 	init.num_parents = 1;
 	init.ops = &rockchip_cpuclk_ops;
 
@@ -276,10 +276,10 @@  struct clk *rockchip_clk_register_cpuclk(const char *name,
 	cpuclk->clk_nb.notifier_call = rockchip_cpuclk_notifier_cb;
 	cpuclk->hw.init = &init;
 
-	cpuclk->alt_parent = __clk_lookup(parent_names[1]);
+	cpuclk->alt_parent = __clk_lookup(parent_names[reg_data->mux_core_alt]);
 	if (!cpuclk->alt_parent) {
-		pr_err("%s: could not lookup alternate parent\n",
-		       __func__);
+		pr_err("%s: could not lookup alternate parent: (%d)\n",
+		       __func__, reg_data->mux_core_alt);
 		ret = -EINVAL;
 		goto free_cpuclk;
 	}
@@ -291,10 +291,11 @@  struct clk *rockchip_clk_register_cpuclk(const char *name,
 		goto free_cpuclk;
 	}
 
-	clk = __clk_lookup(parent_names[0]);
+	clk = __clk_lookup(parent_names[reg_data->mux_core_main]);
 	if (!clk) {
-		pr_err("%s: could not lookup parent clock %s\n",
-		       __func__, parent_names[0]);
+		pr_err("%s: could not lookup parent clock: (%d) %s\n",
+		       __func__, reg_data->mux_core_main,
+		       parent_names[reg_data->mux_core_main]);
 		ret = -EINVAL;
 		goto free_alt_parent;
 	}