This is a note to let you know that I've just added the patch titled clk: iproc: Do not rely on node name for correct PLL setup to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: clk-iproc-do-not-rely-on-node-name-for-correct-pll-s.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 9ec6212e0f222482fd0c56852ef4cde5a5028b87 Author: Florian Fainelli <f.fainelli@xxxxxxxxx> Date: Mon Sep 5 09:15:03 2022 -0700 clk: iproc: Do not rely on node name for correct PLL setup [ Upstream commit 1b24a132eba7a1c19475ba2510ec1c00af3ff914 ] After commit 31fd9b79dc58 ("ARM: dts: BCM5301X: update CRU block description") a warning from clk-iproc-pll.c was generated due to a duplicate PLL name as well as the console stopped working. Upon closer inspection it became clear that iproc_pll_clk_setup() used the Device Tree node unit name as an unique identifier as well as a parent name to parent all clocks under the PLL. BCM5301X was the first platform on which that got noticed because of the DT node unit name renaming but the same assumptions hold true for any user of the iproc_pll_clk_setup() function. The first 'clock-output-names' property is always guaranteed to be unique as well as providing the actual desired PLL clock name, so we utilize that to register the PLL and as a parent name of all children clock. Fixes: 5fe225c105fd ("clk: iproc: add initial common clock support") Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Acked-by: Rafał Miłecki <rafal@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220905161504.1526-1-f.fainelli@xxxxxxxxx Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c index 53006f4305f8..d52f2b810a4b 100644 --- a/drivers/clk/bcm/clk-iproc-pll.c +++ b/drivers/clk/bcm/clk-iproc-pll.c @@ -621,6 +621,7 @@ void __init iproc_pll_clk_setup(struct device_node *node, const char *parent_name; struct iproc_clk *iclk_array; struct clk_hw_onecell_data *clk_data; + const char *clk_name; if (WARN_ON(!pll_ctrl) || WARN_ON(!clk_ctrl)) return; @@ -669,7 +670,12 @@ void __init iproc_pll_clk_setup(struct device_node *node, iclk = &iclk_array[0]; iclk->pll = pll; - init.name = node->name; + ret = of_property_read_string_index(node, "clock-output-names", + 0, &clk_name); + if (WARN_ON(ret)) + goto err_pll_register; + + init.name = clk_name; init.ops = &iproc_pll_ops; init.flags = 0; parent_name = of_clk_get_parent_name(node, 0); @@ -689,13 +695,11 @@ void __init iproc_pll_clk_setup(struct device_node *node, goto err_pll_register; clk_data->hws[0] = &iclk->hw; + parent_name = clk_name; /* now initialize and register all leaf clocks */ for (i = 1; i < num_clks; i++) { - const char *clk_name; - memset(&init, 0, sizeof(init)); - parent_name = node->name; ret = of_property_read_string_index(node, "clock-output-names", i, &clk_name);