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Signed-off-by: Claudiu Beznea --- drivers/clk/at91/sckc.c | 112 +++++++++++++++++++++++++++++++++--------------- 1 file changed, 77 insertions(+), 35 deletions(-) diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c index ab6ecefc49ad..b7163d3a2269 100644 --- a/drivers/clk/at91/sckc.c +++ b/drivers/clk/at91/sckc.c @@ -22,15 +22,25 @@ #define SLOWCK_SW_TIME_USEC ((SLOWCK_SW_CYCLES * USEC_PER_SEC) / \ SLOW_CLOCK_FREQ) -#define AT91_SCKC_CR 0x00 -#define AT91_SCKC_RCEN (1 << 0) -#define AT91_SCKC_OSC32EN (1 << 1) -#define AT91_SCKC_OSC32BYP (1 << 2) -#define AT91_SCKC_OSCSEL (1 << 3) +#define AT91_SCKC_CR 0x00 +#define AT91_SCKC_RCEN(off) (1 << (off)->cr_rcen) +#define AT91_SCKC_OSC32EN(off) (1 << (off)->cr_osc32en) +#define AT91_SCKC_OSC32BYP(off) (1 << (off)->cr_osc32byp) +#define AT91_SCKC_OSCSEL(off) (1 << (off)->cr_oscsel) + +#define AT91_SCKC_OFFSET_INVALID (32) + +struct clk_slow_offsets { + u8 cr_rcen; + u8 cr_osc32en; + u8 cr_osc32byp; + u8 cr_oscsel; +}; struct clk_slow_osc { struct clk_hw hw; void __iomem *sckcr; + const struct clk_slow_offsets *offsets; unsigned long startup_usec; }; @@ -39,6 +49,7 @@ struct clk_slow_osc { struct clk_sama5d4_slow_osc { struct clk_hw hw; void __iomem *sckcr; + const struct clk_slow_offsets *offsets; unsigned long startup_usec; bool prepared; }; @@ -48,6 +59,7 @@ struct clk_sama5d4_slow_osc { struct clk_slow_rc_osc { struct clk_hw hw; void __iomem *sckcr; + const struct clk_slow_offsets *offsets; unsigned long frequency; unsigned long accuracy; unsigned long startup_usec; @@ -58,6 +70,7 @@ struct clk_slow_rc_osc { struct clk_sam9x5_slow { struct clk_hw hw; void __iomem *sckcr; + const struct clk_slow_offsets *offsets; u8 parent; }; @@ -69,10 +82,11 @@ static int clk_slow_osc_prepare(struct clk_hw *hw) void __iomem *sckcr = osc->sckcr; u32 tmp = readl(sckcr); - if (tmp & (AT91_SCKC_OSC32BYP | AT91_SCKC_OSC32EN)) + if (tmp & (AT91_SCKC_OSC32BYP(osc->offsets) | + AT91_SCKC_OSC32EN(osc->offsets))) return 0; - writel(tmp | AT91_SCKC_OSC32EN, sckcr); + writel(tmp | AT91_SCKC_OSC32EN(osc->offsets), sckcr); usleep_range(osc->startup_usec, osc->startup_usec + 1); @@ -85,10 +99,10 @@ static void clk_slow_osc_unprepare(struct clk_hw *hw) void __iomem *sckcr = osc->sckcr; u32 tmp = readl(sckcr); - if (tmp & AT91_SCKC_OSC32BYP) + if (tmp & AT91_SCKC_OSC32BYP(osc->offsets)) return; - writel(tmp & ~AT91_SCKC_OSC32EN, sckcr); + writel(tmp & ~AT91_SCKC_OSC32EN(osc->offsets), sckcr); } static int clk_slow_osc_is_prepared(struct clk_hw *hw) @@ -97,10 +111,10 @@ static int clk_slow_osc_is_prepared(struct clk_hw *hw) void __iomem *sckcr = osc->sckcr; u32 tmp = readl(sckcr); - if (tmp & AT91_SCKC_OSC32BYP) + if (tmp & AT91_SCKC_OSC32BYP(osc->offsets)) return 1; - return !!(tmp & AT91_SCKC_OSC32EN); + return !!(tmp & AT91_SCKC_OSC32EN(osc->offsets)); } static const struct clk_ops slow_osc_ops = { @@ -114,7 +128,8 @@ at91_clk_register_slow_osc(void __iomem *sckcr, const char *name, const char *parent_name, unsigned long startup, - bool bypass) + bool bypass, + const struct clk_slow_offsets *offsets) { struct clk_slow_osc *osc; struct clk_hw *hw; @@ -137,9 +152,11 @@ at91_clk_register_slow_osc(void __iomem *sckcr, osc->hw.init = &init; osc->sckcr = sckcr; osc->startup_usec = startup; + osc->offsets = offsets; if (bypass) - writel((readl(sckcr) & ~AT91_SCKC_OSC32EN) | AT91_SCKC_OSC32BYP, + writel((readl(sckcr) & ~AT91_SCKC_OSC32EN(osc->offsets)) | + AT91_SCKC_OSC32BYP(osc->offsets), sckcr); hw = &osc->hw; @@ -153,7 +170,8 @@ at91_clk_register_slow_osc(void __iomem *sckcr, } static void __init -of_at91sam9x5_clk_slow_osc_setup(struct device_node *np, void __iomem *sckcr) +of_at91sam9x5_clk_slow_osc_setup(struct device_node *np, void __iomem *sckcr, + const struct clk_slow_offsets *offsets) { struct clk_hw *hw; const char *parent_name; @@ -167,7 +185,7 @@ of_at91sam9x5_clk_slow_osc_setup(struct device_node *np, void __iomem *sckcr) bypass = of_property_read_bool(np, "atmel,osc-bypass"); hw = at91_clk_register_slow_osc(sckcr, name, parent_name, startup, - bypass); + bypass, offsets); if (IS_ERR(hw)) return; @@ -195,7 +213,7 @@ static int clk_slow_rc_osc_prepare(struct clk_hw *hw) struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); void __iomem *sckcr = osc->sckcr; - writel(readl(sckcr) | AT91_SCKC_RCEN, sckcr); + writel(readl(sckcr) | AT91_SCKC_RCEN(osc->offsets), sckcr); usleep_range(osc->startup_usec, osc->startup_usec + 1); @@ -207,14 +225,14 @@ static void clk_slow_rc_osc_unprepare(struct clk_hw *hw) struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); void __iomem *sckcr = osc->sckcr; - writel(readl(sckcr) & ~AT91_SCKC_RCEN, sckcr); + writel(readl(sckcr) & ~AT91_SCKC_RCEN(osc->offsets), sckcr); } static int clk_slow_rc_osc_is_prepared(struct clk_hw *hw) { struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); - return !!(readl(osc->sckcr) & AT91_SCKC_RCEN); + return !!(readl(osc->sckcr) & AT91_SCKC_RCEN(osc->offsets)); } static const struct clk_ops slow_rc_osc_ops = { @@ -230,7 +248,8 @@ at91_clk_register_slow_rc_osc(void __iomem *sckcr, const char *name, unsigned long frequency, unsigned long accuracy, - unsigned long startup) + unsigned long startup, + const struct clk_slow_offsets *offsets) { struct clk_slow_rc_osc *osc; struct clk_hw *hw; @@ -252,6 +271,7 @@ at91_clk_register_slow_rc_osc(void __iomem *sckcr, osc->hw.init = &init; osc->sckcr = sckcr; + osc->offsets = offsets; osc->frequency = frequency; osc->accuracy = accuracy; osc->startup_usec = startup; @@ -267,7 +287,8 @@ at91_clk_register_slow_rc_osc(void __iomem *sckcr, } static void __init -of_at91sam9x5_clk_slow_rc_osc_setup(struct device_node *np, void __iomem *sckcr) +of_at91sam9x5_clk_slow_rc_osc_setup(struct device_node *np, void __iomem *sckcr, + const struct clk_slow_offsets *offsets) { struct clk_hw *hw; u32 frequency = 0; @@ -281,7 +302,7 @@ of_at91sam9x5_clk_slow_rc_osc_setup(struct device_node *np, void __iomem *sckcr) of_property_read_u32(np, "atmel,startup-time-usec", &startup); hw = at91_clk_register_slow_rc_osc(sckcr, name, frequency, accuracy, - startup); + startup, offsets); if (IS_ERR(hw)) return; @@ -299,14 +320,14 @@ static int clk_sam9x5_slow_set_parent(struct clk_hw *hw, u8 index) tmp = readl(sckcr); - if ((!index && !(tmp & AT91_SCKC_OSCSEL)) || - (index && (tmp & AT91_SCKC_OSCSEL))) + if ((!index && !(tmp & AT91_SCKC_OSCSEL(slowck->offsets))) || + (index && (tmp & AT91_SCKC_OSCSEL(slowck->offsets)))) return 0; if (index) - tmp |= AT91_SCKC_OSCSEL; + tmp |= AT91_SCKC_OSCSEL(slowck->offsets); else - tmp &= ~AT91_SCKC_OSCSEL; + tmp &= ~AT91_SCKC_OSCSEL(slowck->offsets); writel(tmp, sckcr); @@ -319,7 +340,7 @@ static u8 clk_sam9x5_slow_get_parent(struct clk_hw *hw) { struct clk_sam9x5_slow *slowck = to_clk_sam9x5_slow(hw); - return !!(readl(slowck->sckcr) & AT91_SCKC_OSCSEL); + return !!(readl(slowck->sckcr) & AT91_SCKC_OSCSEL(slowck->offsets)); } static const struct clk_ops sam9x5_slow_ops = { @@ -331,7 +352,8 @@ static struct clk_hw * __init at91_clk_register_sam9x5_slow(void __iomem *sckcr, const char *name, const char **parent_names, - int num_parents) + int num_parents, + const struct clk_slow_offsets *offsets) { struct clk_sam9x5_slow *slowck; struct clk_hw *hw; @@ -353,7 +375,8 @@ at91_clk_register_sam9x5_slow(void __iomem *sckcr, slowck->hw.init = &init; slowck->sckcr = sckcr; - slowck->parent = !!(readl(sckcr) & AT91_SCKC_OSCSEL); + slowck->offsets = offsets; + slowck->parent = !!(readl(sckcr) & AT91_SCKC_OSCSEL(slowck->offsets)); hw = &slowck->hw; ret = clk_hw_register(NULL, &slowck->hw); @@ -366,7 +389,8 @@ at91_clk_register_sam9x5_slow(void __iomem *sckcr, } static void __init -of_at91sam9x5_clk_slow_setup(struct device_node *np, void __iomem *sckcr) +of_at91sam9x5_clk_slow_setup(struct device_node *np, void __iomem *sckcr, + const struct clk_slow_offsets *offsets) { struct clk_hw *hw; const char *parent_names[2]; @@ -382,7 +406,7 @@ of_at91sam9x5_clk_slow_setup(struct device_node *np, void __iomem *sckcr) of_property_read_string(np, "clock-output-names", &name); hw = at91_clk_register_sam9x5_slow(sckcr, name, parent_names, - num_parents); + num_parents, offsets); if (IS_ERR(hw)) return; @@ -406,10 +430,18 @@ static const struct of_device_id sckc_clk_ids[] __initconst = { { /*sentinel*/ } }; +static const struct clk_slow_offsets at91sam9x5_offsets = { + .cr_rcen = 0, + .cr_osc32en = 1, + .cr_osc32byp = 2, + .cr_oscsel = 3, +}; + static void __init of_at91sam9x5_sckc_setup(struct device_node *np) { struct device_node *childnp; - void (*clk_setup)(struct device_node *, void __iomem *); + void (*clk_setup)(struct device_node *np, void __iomem *io, + const struct clk_slow_offsets *offsets); const struct of_device_id *clk_id; void __iomem *regbase = of_iomap(np, 0); @@ -421,7 +453,7 @@ static void __init of_at91sam9x5_sckc_setup(struct device_node *np) if (!clk_id) continue; clk_setup = clk_id->data; - clk_setup(childnp, regbase); + clk_setup(childnp, regbase, &at91sam9x5_offsets); } } CLK_OF_DECLARE(at91sam9x5_clk_sckc, "atmel,at91sam9x5-sckc", @@ -438,7 +470,7 @@ static int clk_sama5d4_slow_osc_prepare(struct clk_hw *hw) * Assume that if it has already been selected (for example by the * bootloader), enough time has aready passed. */ - if ((readl(osc->sckcr) & AT91_SCKC_OSCSEL)) { + if ((readl(osc->sckcr) & AT91_SCKC_OSCSEL(osc->offsets))) { osc->prepared = true; return 0; } @@ -461,6 +493,13 @@ static const struct clk_ops sama5d4_slow_osc_ops = { .is_prepared = clk_sama5d4_slow_osc_is_prepared, }; +static const struct clk_slow_offsets at91sama5d4_offsets = { + .cr_rcen = AT91_SCKC_OFFSET_INVALID, + .cr_osc32en = AT91_SCKC_OFFSET_INVALID, + .cr_osc32byp = AT91_SCKC_OFFSET_INVALID, + .cr_oscsel = 3, +}; + static void __init of_sama5d4_sckc_setup(struct device_node *np) { void __iomem *regbase = of_iomap(np, 0); @@ -498,9 +537,11 @@ static void __init of_sama5d4_sckc_setup(struct device_node *np) osc->hw.init = &init; osc->sckcr = regbase; osc->startup_usec = 1200000; + osc->offsets = &at91sama5d4_offsets; if (bypass) - writel((readl(regbase) | AT91_SCKC_OSC32BYP), regbase); + writel((readl(regbase) | AT91_SCKC_OSC32BYP(osc->offsets)), + regbase); hw = &osc->hw; ret = clk_hw_register(NULL, &osc->hw); @@ -509,7 +550,8 @@ static void __init of_sama5d4_sckc_setup(struct device_node *np) return; } - hw = at91_clk_register_sam9x5_slow(regbase, "slowck", parent_names, 2); + hw = at91_clk_register_sam9x5_slow(regbase, "slowck", parent_names, 2, + &at91sama5d4_offsets); if (IS_ERR(hw)) return; From patchwork Thu Feb 14 12:14:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 10812575 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25D0F13B4 for ; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Claudiu.Beznea@microchip.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Claudiu Beznea Add support for SAM9X60. Signed-off-by: Claudiu Beznea --- drivers/clk/at91/sckc.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c index b7163d3a2269..b3075c51d260 100644 --- a/drivers/clk/at91/sckc.c +++ b/drivers/clk/at91/sckc.c @@ -459,6 +459,36 @@ static void __init of_at91sam9x5_sckc_setup(struct device_node *np) CLK_OF_DECLARE(at91sam9x5_clk_sckc, "atmel,at91sam9x5-sckc", of_at91sam9x5_sckc_setup); +static const struct clk_slow_offsets at91sam9x60_offsets = { + .cr_rcen = AT91_SCKC_OFFSET_INVALID, + .cr_osc32en = 1, + .cr_osc32byp = 2, + .cr_oscsel = 24, +}; + +static void __init of_at91sam9x60_sckc_setup(struct device_node *np) +{ + struct device_node *childnp; + void (*clk_setup)(struct device_node *np, void __iomem *io, + const struct clk_slow_offsets *offsets); + const struct of_device_id *clk_id; + void __iomem *regbase = of_iomap(np, 0); + + if (!regbase) + return; + + for_each_child_of_node(np, childnp) { + clk_id = of_match_node(sckc_clk_ids, childnp); + if (!clk_id) + continue; + clk_setup = clk_id->data; + clk_setup(childnp, regbase, &at91sam9x60_offsets); + } +} + +CLK_OF_DECLARE(at91sam9x60_clk_sckc, "microchip,sam9x60-sckc", + of_at91sam9x60_sckc_setup); + static int clk_sama5d4_slow_osc_prepare(struct clk_hw *hw) { struct clk_sama5d4_slow_osc *osc = to_clk_sama5d4_slow_osc(hw); From patchwork Thu Feb 14 12:14:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu Beznea X-Patchwork-Id: 10812581 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F253313B4 for ; Thu, 14 Feb 2019 12:15:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DF0AE2DB62 for ; Thu, 14 Feb 2019 12:15:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D18992DC41; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Claudiu.Beznea@microchip.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Claudiu Beznea Add bindings for SAM9X60's slow clock controller. Signed-off-by: Claudiu Beznea Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/clock/at91-clock.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index e9f70fcdfe80..ce1d21102428 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -9,7 +9,8 @@ Slow Clock controller: Required properties: - compatible : shall be one of the following: "atmel,at91sam9x5-sckc" or - "atmel,sama5d4-sckc": + "atmel,sama5d4-sckc" or + "microchip,sam9x60-sckc": at91 SCKC (Slow Clock Controller) This node contains the slow clock definitions.