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clk: rockchip: rk3399: add cru regs dump for panic

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Add cru and pmucru regs dump when system panic.
It's just for debug.

Change-Id: I3f837f2941054129d20c2355d86f575d6ee84665
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
This commit is contained in:
Elaine Zhang
2016-07-20 15:08:27 +08:00
committed by Gerrit Code Review
parent 65f854e4e2
commit ab5ef60b32
1 changed files with 38 additions and 0 deletions
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38
drivers/clk/rockchip/clk-rk3399.c
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@@ -1575,6 +1575,37 @@ static const char *const rk3399_pmucru_critical_clocks[] __initconst = {
"pclk_rkpwm_pmu",
};
static void __iomem *rk3399_cru_base;
static void __iomem *rk3399_pmucru_base;
void rk3399_dump_cru(void)
{
if (rk3399_cru_base) {
pr_warn("CRU:\n");
print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET,
32, 4, rk3399_cru_base,
0x594, false);
}
if (rk3399_pmucru_base) {
pr_warn("PMU CRU:\n");
print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET,
32, 4, rk3399_pmucru_base,
0x134, false);
}
}
EXPORT_SYMBOL_GPL(rk3399_dump_cru);
static int rk3399_clk_panic(struct notifier_block *this,
unsigned long ev, void *ptr)
{
rk3399_dump_cru();
return NOTIFY_DONE;
}
static struct notifier_block rk3399_clk_panic_block = {
.notifier_call = rk3399_clk_panic,
};
static void __init rk3399_clk_init(struct device_node *np)
{
struct rockchip_clk_provider *ctx;
@@ -1587,6 +1618,8 @@ static void __init rk3399_clk_init(struct device_node *np)
return;
}
rk3399_cru_base = reg_base;
ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip clk init failed\n", __func__);
@@ -1640,6 +1673,8 @@ static void __init rk3399_pmu_clk_init(struct device_node *np)
return;
}
rk3399_pmucru_base = reg_base;
ctx = rockchip_clk_init(np, reg_base, CLKPMU_NR_CLKS);
if (IS_ERR(ctx)) {
pr_err("%s: rockchip pmu clk init failed\n", __func__);
@@ -1659,5 +1694,8 @@ static void __init rk3399_pmu_clk_init(struct device_node *np)
ROCKCHIP_SOFTRST_HIWORD_MASK);
rockchip_clk_of_add_provider(np, ctx);
atomic_notifier_chain_register(&panic_notifier_list,
&rk3399_clk_panic_block);
}
CLK_OF_DECLARE(rk3399_cru_pmu, "rockchip,rk3399-pmucru", rk3399_pmu_clk_init);