From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 60A3B62A for ; Fri, 6 May 2022 00:33:25 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CDC4B14BF; Thu, 5 May 2022 17:33:24 -0700 (PDT) Received: from slackpad.fritz.box (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6B9193FA31; Thu, 5 May 2022 17:33:23 -0700 (PDT) From: Andre Przywara To: Jagan Teki Cc: Samuel Holland , Jernej Skrabec , Lukasz Majewski , Sean Anderson , u-boot@lists.denx.de, linux-sunxi@lists.linux.dev Subject: [PATCH 2/2] clk: sunxi: add and use dummy gate clocks Date: Fri, 6 May 2022 01:33:01 +0100 Message-Id: <20220506003301.13194-3-andre.przywara@arm.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220506003301.13194-1-andre.przywara@arm.com> References: <20220506003301.13194-1-andre.przywara@arm.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some devices enumerate various clocks in their DT, and many drivers just blanketly try to enable all of them. This creates problems since we only model a few gate clocks, and the clock driver outputs a warning when a clock is not described: ========= sunxi_set_gate: (CLK#3) unhandled ========= Some clocks don't have an enable bit, or are already enabled in a different way, so we might want to just ignore them. Add a CCU_CLK_F_DUMMY_GATE flag that indicates that case, and define a GATE_DUMMY macro that can be used in the clock description array. Define a few clocks, used by some pinctrl devices, that way to suppress the runtime warnings. Signed-off-by: Andre Przywara --- drivers/clk/sunxi/clk_h6.c | 2 ++ drivers/clk/sunxi/clk_h616.c | 2 ++ drivers/clk/sunxi/clk_h6_r.c | 2 ++ drivers/clk/sunxi/clk_sunxi.c | 3 +++ include/clk/sunxi.h | 5 +++++ 5 files changed, 14 insertions(+) diff --git a/drivers/clk/sunxi/clk_h6.c b/drivers/clk/sunxi/clk_h6.c index f4e26cbcd45..b3202342932 100644 --- a/drivers/clk/sunxi/clk_h6.c +++ b/drivers/clk/sunxi/clk_h6.c @@ -16,6 +16,8 @@ static struct ccu_clk_gate h6_gates[] = { [CLK_PLL_PERIPH0] = GATE(0x020, BIT(31)), + [CLK_APB1] = GATE_DUMMY, + [CLK_BUS_MMC0] = GATE(0x84c, BIT(0)), [CLK_BUS_MMC1] = GATE(0x84c, BIT(1)), [CLK_BUS_MMC2] = GATE(0x84c, BIT(2)), diff --git a/drivers/clk/sunxi/clk_h616.c b/drivers/clk/sunxi/clk_h616.c index 65ab44643da..80099727def 100644 --- a/drivers/clk/sunxi/clk_h616.c +++ b/drivers/clk/sunxi/clk_h616.c @@ -15,6 +15,8 @@ static struct ccu_clk_gate h616_gates[] = { [CLK_PLL_PERIPH0] = GATE(0x020, BIT(31) | BIT(27)), + [CLK_APB1] = GATE_DUMMY, + [CLK_BUS_MMC0] = GATE(0x84c, BIT(0)), [CLK_BUS_MMC1] = GATE(0x84c, BIT(1)), [CLK_BUS_MMC2] = GATE(0x84c, BIT(2)), diff --git a/drivers/clk/sunxi/clk_h6_r.c b/drivers/clk/sunxi/clk_h6_r.c index 2e0bbaa903b..c592886a258 100644 --- a/drivers/clk/sunxi/clk_h6_r.c +++ b/drivers/clk/sunxi/clk_h6_r.c @@ -11,6 +11,8 @@ #include static struct ccu_clk_gate h6_r_gates[] = { + [CLK_R_APB1] = GATE_DUMMY, + [CLK_R_APB1_TIMER] = GATE(0x11c, BIT(0)), [CLK_R_APB1_TWD] = GATE(0x12c, BIT(0)), [CLK_R_APB1_PWM] = GATE(0x13c, BIT(0)), diff --git a/drivers/clk/sunxi/clk_sunxi.c b/drivers/clk/sunxi/clk_sunxi.c index 9673b58a492..9a21367a5d0 100644 --- a/drivers/clk/sunxi/clk_sunxi.c +++ b/drivers/clk/sunxi/clk_sunxi.c @@ -27,6 +27,9 @@ static int sunxi_set_gate(struct clk *clk, bool on) const struct ccu_clk_gate *gate = priv_to_gate(priv, clk->id); u32 reg; + if ((gate->flags & CCU_CLK_F_DUMMY_GATE)) + return 0; + if (!(gate->flags & CCU_CLK_F_IS_VALID)) { printf("%s: (CLK#%ld) unhandled\n", __func__, clk->id); return 0; diff --git a/include/clk/sunxi.h b/include/clk/sunxi.h index a2239b990b8..c4a9dee5ebf 100644 --- a/include/clk/sunxi.h +++ b/include/clk/sunxi.h @@ -18,6 +18,7 @@ enum ccu_flags { CCU_CLK_F_IS_VALID = BIT(0), CCU_RST_F_IS_VALID = BIT(1), + CCU_CLK_F_DUMMY_GATE = BIT(2), }; /** @@ -38,6 +39,10 @@ struct ccu_clk_gate { .flags = CCU_CLK_F_IS_VALID, \ } +#define GATE_DUMMY { \ + .flags = CCU_CLK_F_DUMMY_GATE, \ +} + /** * struct ccu_reset - ccu reset * @off: reset offset -- 2.35.3