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[73.228.159.35]) by smtp.gmail.com with ESMTPSA id e9e14a558f8ab-3d5d5a74286sm6769405ab.39.2025.03.28.14.02.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Mar 2025 14:02:44 -0700 (PDT) From: Alex Elder To: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, dlan@gentoo.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, heylenay@4d2.org, guodong@riscstar.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, spacemit@lists.linux.dev, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/7] clk: spacemit: make clocks optional Date: Fri, 28 Mar 2025 16:02:30 -0500 Message-ID: <20250328210233.1077035-6-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250328210233.1077035-1-elder@riscstar.com> References: <20250328210233.1077035-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit There are some syscon devices that support both clocks and resets, but for now only their reset functionality is required. Make defining clocks optional for a SpacemiT CCU, though at least one clock or at least one reset controller must be defined. Signed-off-by: Alex Elder --- v2: - Comment explains constraints on match data drivers/clk/spacemit/ccu-k1.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/clk/spacemit/ccu-k1.c b/drivers/clk/spacemit/ccu-k1.c index f837d2c2f31fc..6885fea81f6f3 100644 --- a/drivers/clk/spacemit/ccu-k1.c +++ b/drivers/clk/spacemit/ccu-k1.c @@ -1821,6 +1821,10 @@ static int spacemit_ccu_register(struct device *dev, const struct spacemit_ccu_clk *clk; int i, ret, max_id = 0; + /* Clocks are optional */ + if (!clks) + return 0; + for (clk = clks; clk->hw; clk++) max_id = max(max_id, clk->id); @@ -1926,7 +1930,7 @@ static int k1_ccu_probe(struct platform_device *pdev) return 0; } -/* The match data is required to be non-null, and have a non-null clk pointer */ +/* The match data is required, and its clk or reset_data field must not be null */ static const struct of_device_id of_k1_ccu_match[] = { { .compatible = "spacemit,k1-pll", -- 2.45.2