From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tero Kristo Subject: [PATCH 03/27] clk: ti: add support for clkctrl aliases Date: Mon, 30 Oct 2017 15:04:21 +0200 Message-ID: <1509368685-29112-4-git-send-email-t-kristo@ti.com> References: <1509368685-29112-1-git-send-email-t-kristo@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1509368685-29112-1-git-send-email-t-kristo@ti.com> Sender: linux-clk-owner@vger.kernel.org To: linux-clk@vger.kernel.org, sboyd@codeaurora.org, mturquette@baylibre.com Cc: linux-omap@vger.kernel.org, tony@atomide.com List-Id: linux-omap@vger.kernel.org hwmod core still depends on certain clocks being found by name, so we need to add support for adding clkctrl clock aliases. This patch can be reverted when no longer needed by hwmod core code. Signed-off-by: Tero Kristo --- drivers/clk/ti/clk.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 55 insertions(+), 3 deletions(-) diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c index e5a1c82..10a7045 100644 --- a/drivers/clk/ti/clk.c +++ b/drivers/clk/ti/clk.c @@ -108,18 +108,70 @@ void __init ti_dt_clocks_register(struct ti_dt_clk oclks[]) struct device_node *node; struct clk *clk; struct of_phandle_args clkspec; + char buf[64]; + char *ptr; + char *tags[2]; + int i; + int num_args; + int ret; + static bool clkctrl_nodes_missing; + static bool has_clkctrl_data; for (c = oclks; c->node_name != NULL; c++) { - node = of_find_node_by_name(NULL, c->node_name); + strcpy(buf, c->node_name); + ptr = buf; + for (i = 0; i < 2; i++) + tags[i] = NULL; + num_args = 0; + while (*ptr) { + if (*ptr == ':') { + if (num_args >= 2) { + pr_warn("Bad number of tags on %s\n", + c->node_name); + return; + } + tags[num_args++] = ptr + 1; + *ptr = 0; + } + ptr++; + } + + if (num_args && clkctrl_nodes_missing) + continue; + + node = of_find_node_by_name(NULL, buf); + if (num_args) + node = of_find_node_by_name(node, "clk"); clkspec.np = node; + clkspec.args_count = num_args; + for (i = 0; i < num_args; i++) { + ret = kstrtoint(tags[i], i ? 10 : 16, clkspec.args + i); + if (ret) { + pr_warn("Bad tag in %s at %d: %s\n", + c->node_name, i, tags[i]); + return; + } + } clk = of_clk_get_from_provider(&clkspec); if (!IS_ERR(clk)) { c->lk.clk = clk; clkdev_add(&c->lk); } else { - pr_warn("failed to lookup clock node %s\n", - c->node_name); + if (num_args && !has_clkctrl_data) { + if (of_find_compatible_node(NULL, NULL, + "ti,clkctrl")) { + has_clkctrl_data = true; + } else { + clkctrl_nodes_missing = true; + + pr_warn("missing clkctrl nodes, please update your dts.\n"); + continue; + } + } + + pr_warn("failed to lookup clock node %s, ret=%ld\n", + c->node_name, PTR_ERR(clk)); } } } -- 1.9.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki