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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jun 2023 10:50:35.7585 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 76c114b3-16e6-4676-e7e1-08db667bdbe2 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D2.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6566 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add the devicetree compatible for Versal clocking wizard. Acked-by: Krzysztof Kozlowski Signed-off-by: Shubhrajyoti Datta --- Changes in v4: Add Ack and update subject .../devicetree/bindings/clock/xlnx,clocking-wizard.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml index c1f04830a832..896e0bdee6d8 100644 --- a/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml +++ b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml @@ -20,6 +20,7 @@ properties: - xlnx,clocking-wizard - xlnx,clocking-wizard-v5.2 - xlnx,clocking-wizard-v6.0 + - xlnx,versal-clk-wizard reg: From patchwork Tue Jun 6 10:50:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shubhrajyoti Datta X-Patchwork-Id: 13268943 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2544BC7EE32 for ; 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Tue, 6 Jun 2023 05:50:23 -0500 From: Shubhrajyoti Datta To: CC: , , , , , , Subject: [PATCH v4 2/2] clocking-wizard: Add support for versal clocking wizard Date: Tue, 6 Jun 2023 16:20:16 +0530 Message-ID: <20230606105016.31364-3-shubhrajyoti.datta@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230606105016.31364-1-shubhrajyoti.datta@amd.com> References: <20230606105016.31364-1-shubhrajyoti.datta@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044EE:EE_|SA1PR12MB5639:EE_ X-MS-Office365-Filtering-Correlation-Id: f2de068c-522c-4bb1-3155-08db667bdde1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(346002)(136003)(39860400002)(396003)(376002)(451199021)(36840700001)(46966006)(40470700004)(1076003)(186003)(26005)(2616005)(966005)(426003)(336012)(83380400001)(47076005)(36756003)(6666004)(36860700001)(54906003)(82310400005)(30864003)(2906002)(8676002)(8936002)(40480700001)(44832011)(82740400003)(478600001)(40460700003)(5660300002)(6916009)(86362001)(4326008)(41300700001)(316002)(70206006)(70586007)(356005)(81166007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jun 2023 10:50:39.1028 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f2de068c-522c-4bb1-3155-08db667bdde1 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044EE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB5639 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The Clocking Wizard for Versal adaptive compute acceleration platforms. Add Versal clocking wizard support. Signed-off-by: Shubhrajyoti Datta --- Changes in v4: Update changelog Fix warn Previously we had tried to upstream [1] separate driver for clocking wizard. It was decided to add support to the current driver. So abandoning the series. [1] https://lore.kernel.org/all/20221122121255.6823-1-shubhrajyoti.datta@amd.com/ Changes in v3: rename the clocks to clk_in1 and s_axi_clk dt rename the clocks to clk_in1 and s_axi_clk in driver Changes in v2: rename the clocks clk_in1 to in1 and s_axi_clk to s_axi in dt rename the clocks clk_in1 to in1 and s_axi_clk to s_axi in driver update the warn Update the compatible to reflect versal drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 507 ++++++++++++++++----- 1 file changed, 402 insertions(+), 105 deletions(-) diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c index e83f104fad02..737ab31678c1 100644 --- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c +++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c @@ -23,15 +23,41 @@ #define WZRD_NUM_OUTPUTS 7 #define WZRD_ACLK_MAX_FREQ 250000000UL -#define WZRD_CLK_CFG_REG(n) (0x200 + 4 * (n)) +#define WZRD_CLK_CFG_REG(v, n) (0x200 + 0x130 * (v) + 4 * (n)) #define WZRD_CLKOUT0_FRAC_EN BIT(18) -#define WZRD_CLKFBOUT_FRAC_EN BIT(26) +#define WZRD_CLKFBOUT_1 0 +#define WZRD_CLKFBOUT_2 1 +#define WZRD_CLKOUT0_1 2 +#define WZRD_CLKOUT0_2 3 +#define WZRD_DESKEW_2 20 +#define WZRD_DIVCLK 21 +#define WZRD_CLKFBOUT_4 51 +#define WZRD_CLKFBOUT_3 48 +#define WZRD_DUTY_CYCLE 2 +#define WZRD_O_DIV 4 + +#define WZRD_CLKFBOUT_FRAC_EN BIT(1) +#define WZRD_CLKFBOUT_PREDIV2 (BIT(11) | BIT(12) | BIT(9)) +#define WZRD_MULT_PREDIV2 (BIT(10) | BIT(9) | BIT(12)) +#define WZRD_CLKFBOUT_EDGE BIT(8) +#define WZRD_P5EN BIT(13) +#define WZRD_P5EN_SHIFT 13 +#define WZRD_P5FEDGE BIT(15) +#define WZRD_DIVCLK_EDGE BIT(10) +#define WZRD_P5FEDGE_SHIFT 15 +#define WZRD_CLKOUT0_PREDIV2 BIT(11) +#define WZRD_EDGE_SHIFT 8 #define WZRD_CLKFBOUT_MULT_SHIFT 8 #define WZRD_CLKFBOUT_MULT_MASK (0xff << WZRD_CLKFBOUT_MULT_SHIFT) +#define WZRD_CLKFBOUT_L_SHIFT 0 +#define WZRD_CLKFBOUT_H_SHIFT 8 +#define WZRD_CLKFBOUT_L_MASK GENMASK(7, 0) +#define WZRD_CLKFBOUT_H_MASK GENMASK(15, 8) #define WZRD_CLKFBOUT_FRAC_SHIFT 16 #define WZRD_CLKFBOUT_FRAC_MASK (0x3ff << WZRD_CLKFBOUT_FRAC_SHIFT) +#define WZRD_VERSAL_FRAC_MASK GENMASK(5, 0) #define WZRD_DIVCLK_DIVIDE_SHIFT 0 #define WZRD_DIVCLK_DIVIDE_MASK (0xff << WZRD_DIVCLK_DIVIDE_SHIFT) #define WZRD_CLKOUT_DIVIDE_SHIFT 0 @@ -45,6 +71,7 @@ #define WZRD_DR_STATUS_REG_OFFSET 0x04 #define WZRD_DR_LOCK_BIT_MASK 0x00000001 #define WZRD_DR_INIT_REG_OFFSET 0x25C +#define WZRD_DR_INIT_VERSAL_OFFSET 0x14 #define WZRD_DR_DIV_TO_PHASE_OFFSET 4 #define WZRD_DR_BEGIN_DYNA_RECONF 0x03 #define WZRD_DR_BEGIN_DYNA_RECONF_5_2 0x07 @@ -52,6 +79,8 @@ #define WZRD_USEC_POLL 10 #define WZRD_TIMEOUT_POLL 1000 +#define WZRD_FRAC_GRADIENT 64 +#define PREDIV2_MULT 2 /* Divider limits, from UG572 Table 3-4 for Ultrascale+ */ #define DIV_O 0x01 @@ -65,6 +94,14 @@ #define WZRD_VCO_MAX 1600000000 #define WZRD_O_MIN 1 #define WZRD_O_MAX 128 +#define VER_WZRD_M_MIN 4 +#define VER_WZRD_M_MAX 432 +#define VER_WZRD_D_MIN 1 +#define VER_WZRD_D_MAX 123 +#define VER_WZRD_VCO_MIN 2160000000ULL +#define VER_WZRD_VCO_MAX 4320000000ULL +#define VER_WZRD_O_MIN 2 +#define VER_WZRD_O_MAX 511 #define WZRD_MIN_ERR 20000 #define WZRD_FRAC_POINTS 1000 @@ -120,6 +157,7 @@ struct clk_wzrd { * @d: value of the common divider * @o: value of the leaf divider * @lock: register lock + * @is_versal: Flag indicating if it versal device */ struct clk_wzrd_divider { struct clk_hw hw; @@ -133,6 +171,11 @@ struct clk_wzrd_divider { u32 d; u32 o; spinlock_t *lock; /* divider lock */ + bool is_versal; +}; + +struct versal_clk_data { + bool is_versal; }; #define to_clk_wzrd(_nb) container_of(_nb, struct clk_wzrd, nb) @@ -152,23 +195,42 @@ static unsigned long clk_wzrd_recalc_rate(struct clk_hw *hw, { struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); void __iomem *div_addr = divider->base + divider->offset; - unsigned int val; + u32 div, p5en, edge, prediv2, all; + unsigned int val, vall, valh; - val = readl(div_addr) >> divider->shift; - val &= div_mask(divider->width); + if (!divider->is_versal) { + val = readl(div_addr) >> divider->shift; + val &= div_mask(divider->width); - return divider_recalc_rate(hw, parent_rate, val, divider->table, - divider->flags, divider->width); + return divider_recalc_rate(hw, parent_rate, val, divider->table, + divider->flags, divider->width); + } + + edge = !!(readl(div_addr) & WZRD_CLKFBOUT_EDGE); + p5en = !!(readl(div_addr) & WZRD_P5EN); + prediv2 = !!(readl(div_addr) & WZRD_CLKOUT0_PREDIV2); + vall = readl(div_addr + 4) & WZRD_CLKFBOUT_L_MASK; + valh = readl(div_addr + 4) >> WZRD_CLKFBOUT_H_SHIFT; + all = valh + vall + edge; + if (!all) + all = 1; + + if (prediv2) + div = 2 * all + prediv2 * p5en; + else + div = all; + + return DIV_ROUND_UP_ULL((u64)parent_rate, div); } static int clk_wzrd_dynamic_reconfig(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { - int err; - u32 value; - unsigned long flags = 0; struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); void __iomem *div_addr = divider->base + divider->offset; + u32 value, regh, edged, p5en, p5fedge, regval, regval1; + unsigned long flags = 0; + int err; if (divider->lock) spin_lock_irqsave(divider->lock, flags); @@ -177,26 +239,54 @@ static int clk_wzrd_dynamic_reconfig(struct clk_hw *hw, unsigned long rate, value = DIV_ROUND_CLOSEST(parent_rate, rate); - /* Cap the value to max */ - min_t(u32, value, WZRD_DR_MAX_INT_DIV_VALUE); - - /* Set divisor and clear phase offset */ - writel(value, div_addr); - writel(0x00, div_addr + WZRD_DR_DIV_TO_PHASE_OFFSET); - - /* Check status register */ - err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, - value, value & WZRD_DR_LOCK_BIT_MASK, - WZRD_USEC_POLL, WZRD_TIMEOUT_POLL); - if (err) - goto err_reconfig; - - /* Initiate reconfiguration */ - writel(WZRD_DR_BEGIN_DYNA_RECONF_5_2, - divider->base + WZRD_DR_INIT_REG_OFFSET); - writel(WZRD_DR_BEGIN_DYNA_RECONF1_5_2, - divider->base + WZRD_DR_INIT_REG_OFFSET); - + if (!divider->is_versal) { + /* Cap the value to max */ + min_t(u32, value, WZRD_DR_MAX_INT_DIV_VALUE); + + /* Set divisor and clear phase offset */ + writel(value, div_addr); + writel(0x00, div_addr + WZRD_DR_DIV_TO_PHASE_OFFSET); + + /* Check status register */ + err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, + value, value & WZRD_DR_LOCK_BIT_MASK, + WZRD_USEC_POLL, WZRD_TIMEOUT_POLL); + if (err) + goto err_reconfig; + + /* Initiate reconfiguration */ + writel(WZRD_DR_BEGIN_DYNA_RECONF_5_2, + divider->base + WZRD_DR_INIT_REG_OFFSET); + writel(WZRD_DR_BEGIN_DYNA_RECONF1_5_2, + divider->base + WZRD_DR_INIT_REG_OFFSET); + + } else { + regh = (value / 4); + regval1 = readl(div_addr); + regval1 |= WZRD_CLKFBOUT_PREDIV2; + regval1 = regval1 & ~(WZRD_CLKFBOUT_EDGE | WZRD_P5EN | WZRD_P5FEDGE); + if (value % 4 > 1) { + edged = 1; + regval1 |= (edged << WZRD_EDGE_SHIFT); + } + p5fedge = value % 2; + p5en = value % 2; + regval1 = regval1 | p5en << WZRD_P5EN_SHIFT | p5fedge << WZRD_P5FEDGE_SHIFT; + writel(regval1, div_addr); + + regval = regh | regh << WZRD_CLKFBOUT_H_SHIFT; + writel(regval, div_addr + 4); + /* Check status register */ + err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, + value, value & WZRD_DR_LOCK_BIT_MASK, + WZRD_USEC_POLL, WZRD_TIMEOUT_POLL); + if (err) + goto err_reconfig; + + /* Initiate reconfiguration */ + writel(WZRD_DR_BEGIN_DYNA_RECONF, + divider->base + WZRD_DR_INIT_VERSAL_OFFSET); + } /* Check status register */ err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, value, value & WZRD_DR_LOCK_BIT_MASK, @@ -227,14 +317,35 @@ static int clk_wzrd_get_divisors(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); - unsigned long vco_freq, freq, diff; + u64 vco_freq, freq, diff, vcomin, vcomax; u32 m, d, o; + u32 mmin, mmax, dmin, dmax, omin, omax; + + if (divider->is_versal) { + mmin = VER_WZRD_M_MIN; + mmax = VER_WZRD_M_MAX; + dmin = VER_WZRD_D_MIN; + dmax = VER_WZRD_D_MAX; + omin = VER_WZRD_O_MIN; + omax = VER_WZRD_O_MAX; + vcomin = VER_WZRD_VCO_MIN; + vcomax = VER_WZRD_VCO_MAX; + } else { + mmin = WZRD_M_MIN; + mmax = WZRD_M_MAX; + dmin = WZRD_D_MIN; + dmax = WZRD_D_MAX; + omin = WZRD_O_MIN; + omax = WZRD_O_MAX; + vcomin = WZRD_VCO_MIN; + vcomax = WZRD_VCO_MAX; + } - for (m = WZRD_M_MIN; m <= WZRD_M_MAX; m++) { - for (d = WZRD_D_MIN; d <= WZRD_D_MAX; d++) { + for (m = mmin; m <= mmax; m++) { + for (d = dmin; d <= dmax; d++) { vco_freq = DIV_ROUND_CLOSEST((parent_rate * m), d); - if (vco_freq >= WZRD_VCO_MIN && vco_freq <= WZRD_VCO_MAX) { - for (o = WZRD_O_MIN; o <= WZRD_O_MAX; o++) { + if (vco_freq >= vcomin && vco_freq <= vcomax) { + for (o = omin; o <= omax; o++) { freq = DIV_ROUND_CLOSEST_ULL(vco_freq, o); diff = abs(freq - rate); @@ -254,8 +365,10 @@ static int clk_wzrd_get_divisors(struct clk_hw *hw, unsigned long rate, static int clk_wzrd_dynamic_all_nolock(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { + u32 regh, edged, p5en, p5fedge, value2, m, regval, regval1; struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); unsigned long vco_freq, rate_div, clockout0_div; + void __iomem *div_addr = divider->base; u32 reg, pre, value, f; int err; @@ -263,25 +376,80 @@ static int clk_wzrd_dynamic_all_nolock(struct clk_hw *hw, unsigned long rate, if (err) return err; - vco_freq = DIV_ROUND_CLOSEST(parent_rate * divider->m, divider->d); - rate_div = DIV_ROUND_CLOSEST_ULL((vco_freq * WZRD_FRAC_POINTS), rate); - - clockout0_div = div_u64(rate_div, WZRD_FRAC_POINTS); - - pre = DIV_ROUND_CLOSEST_ULL(vco_freq * WZRD_FRAC_POINTS, rate); - f = (pre - (clockout0_div * WZRD_FRAC_POINTS)); - f &= WZRD_CLKOUT_FRAC_MASK; - - reg = FIELD_PREP(WZRD_CLKOUT_DIVIDE_MASK, clockout0_div) | - FIELD_PREP(WZRD_CLKOUT0_FRAC_MASK, f); + if (divider->is_versal) { + writel(0, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKFBOUT_4)); + + m = divider->m; + edged = m % WZRD_DUTY_CYCLE; + regh = m / WZRD_DUTY_CYCLE; + regval1 = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKFBOUT_1)); + regval1 |= WZRD_MULT_PREDIV2; + if (edged) + regval1 = regval1 | WZRD_CLKFBOUT_EDGE; + else + regval1 = regval1 & ~WZRD_CLKFBOUT_EDGE; + + writel(regval1, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKFBOUT_1)); + regval1 = regh | regh << WZRD_CLKFBOUT_H_SHIFT; + writel(regval1, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKFBOUT_2)); + + value2 = divider->d; + edged = value2 % WZRD_DUTY_CYCLE; + regh = (value2 / WZRD_DUTY_CYCLE); + regval1 = FIELD_PREP(WZRD_DIVCLK_EDGE, edged); + writel(regval1, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_DESKEW_2)); + regval1 = regh | regh << WZRD_CLKFBOUT_H_SHIFT; + writel(regval1, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_DIVCLK)); + + value = divider->o; + regh = value / WZRD_O_DIV; + regval1 = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKOUT0_1)); + regval1 |= WZRD_CLKFBOUT_PREDIV2; + regval1 = regval1 & ~(WZRD_CLKFBOUT_EDGE | WZRD_P5EN | WZRD_P5FEDGE); + + if (value % WZRD_O_DIV > 1) { + edged = 1; + regval1 |= edged << WZRD_CLKFBOUT_H_SHIFT; + } - writel(reg, divider->base + WZRD_CLK_CFG_REG(2)); - /* Set divisor and clear phase offset */ - reg = FIELD_PREP(WZRD_CLKFBOUT_MULT_MASK, divider->m) | - FIELD_PREP(WZRD_DIVCLK_DIVIDE_MASK, divider->d); - writel(reg, divider->base + WZRD_CLK_CFG_REG(0)); - writel(divider->o, divider->base + WZRD_CLK_CFG_REG(2)); - writel(0, divider->base + WZRD_CLK_CFG_REG(3)); + p5fedge = value % WZRD_DUTY_CYCLE; + p5en = value % WZRD_DUTY_CYCLE; + + regval1 = regval1 | FIELD_PREP(WZRD_P5EN, p5en) | FIELD_PREP(WZRD_P5FEDGE, p5fedge); + writel(regval1, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKOUT0_1)); + regval = regh | regh << WZRD_CLKFBOUT_H_SHIFT; + writel(regval, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, + WZRD_CLKOUT0_2)); + div_addr = divider->base + WZRD_DR_INIT_VERSAL_OFFSET; + + } else { + vco_freq = DIV_ROUND_CLOSEST(parent_rate * divider->m, divider->d); + rate_div = DIV_ROUND_CLOSEST_ULL((vco_freq * WZRD_FRAC_POINTS), rate); + + clockout0_div = div_u64(rate_div, WZRD_FRAC_POINTS); + + pre = DIV_ROUND_CLOSEST_ULL(vco_freq * WZRD_FRAC_POINTS, rate); + f = (pre - (clockout0_div * WZRD_FRAC_POINTS)); + f &= WZRD_CLKOUT_FRAC_MASK; + + reg = FIELD_PREP(WZRD_CLKOUT_DIVIDE_MASK, clockout0_div) | + FIELD_PREP(WZRD_CLKOUT0_FRAC_MASK, f); + + writel(reg, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 2)); + /* Set divisor and clear phase offset */ + reg = FIELD_PREP(WZRD_CLKFBOUT_MULT_MASK, divider->m) | + FIELD_PREP(WZRD_DIVCLK_DIVIDE_MASK, divider->d); + writel(reg, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 0)); + writel(divider->o, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 2)); + writel(0, divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 3)); + div_addr = divider->base + WZRD_DR_INIT_REG_OFFSET; + } /* Check status register */ err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, value, value & WZRD_DR_LOCK_BIT_MASK, @@ -290,9 +458,7 @@ static int clk_wzrd_dynamic_all_nolock(struct clk_hw *hw, unsigned long rate, return -ETIMEDOUT; /* Initiate reconfiguration */ - writel(WZRD_DR_BEGIN_DYNA_RECONF, - divider->base + WZRD_DR_INIT_REG_OFFSET); - + writel(WZRD_DR_BEGIN_DYNA_RECONF, div_addr); /* Check status register */ return readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, value, value & WZRD_DR_LOCK_BIT_MASK, @@ -319,17 +485,77 @@ static unsigned long clk_wzrd_recalc_rate_all(struct clk_hw *hw, unsigned long parent_rate) { struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); + u32 edged, div2, p5en, edge, prediv2, all, regl, regh, mult; u32 m, d, o, div, reg, f; - reg = readl(divider->base + WZRD_CLK_CFG_REG(0)); - d = FIELD_GET(WZRD_DIVCLK_DIVIDE_MASK, reg); - m = FIELD_GET(WZRD_CLKFBOUT_MULT_MASK, reg); - reg = readl(divider->base + WZRD_CLK_CFG_REG(2)); - o = FIELD_GET(WZRD_DIVCLK_DIVIDE_MASK, reg); - f = FIELD_GET(WZRD_CLKOUT0_FRAC_MASK, reg); + if (!divider->is_versal) { + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 0)); + d = FIELD_GET(WZRD_DIVCLK_DIVIDE_MASK, reg); + m = FIELD_GET(WZRD_CLKFBOUT_MULT_MASK, reg); + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, 2)); + o = FIELD_GET(WZRD_DIVCLK_DIVIDE_MASK, reg); + f = FIELD_GET(WZRD_CLKOUT0_FRAC_MASK, reg); + + div = DIV_ROUND_CLOSEST(d * (WZRD_FRAC_POINTS * o + f), WZRD_FRAC_POINTS); + return divider_recalc_rate(hw, parent_rate * m, div, divider->table, + divider->flags, divider->width); + } + edge = !!(readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKFBOUT_1)) & + WZRD_CLKFBOUT_EDGE); + + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKFBOUT_2)); + regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); + regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); + + mult = regl + regh + edge; + if (!mult) + mult = 1; + + regl = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKFBOUT_4)) & + WZRD_CLKFBOUT_FRAC_EN; + if (regl) { + regl = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKFBOUT_3)) + & WZRD_VERSAL_FRAC_MASK; + mult = mult * WZRD_FRAC_GRADIENT + regl; + parent_rate = DIV_ROUND_CLOSEST((parent_rate * mult), WZRD_FRAC_GRADIENT); + } else { + parent_rate = parent_rate * mult; + } + + /* O Calculation */ + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKOUT0_1)); + edged = FIELD_GET(WZRD_CLKFBOUT_EDGE, reg); + p5en = FIELD_GET(WZRD_P5EN, reg); + prediv2 = FIELD_GET(WZRD_CLKOUT0_PREDIV2, reg); + + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_CLKOUT0_2)); + /* Low time */ + regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); + /* High time */ + regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); + all = regh + regl + edged; + if (!all) + all = 1; + + if (prediv2) + div2 = PREDIV2_MULT * all + p5en; + else + div2 = all; + + /* D calculation */ + edged = !!(readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_DESKEW_2)) & + WZRD_DIVCLK_EDGE); + reg = readl(divider->base + WZRD_CLK_CFG_REG(divider->is_versal, WZRD_DIVCLK)); + /* Low time */ + regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); + /* High time */ + regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); + div = regl + regh + edged; + if (!div) + div = 1; - div = DIV_ROUND_CLOSEST(d * (WZRD_FRAC_POINTS * o + f), WZRD_FRAC_POINTS); - return divider_recalc_rate(hw, parent_rate * m, div, divider->table, + div = div * div2; + return divider_recalc_rate(hw, parent_rate, div, divider->table, divider->flags, divider->width); } @@ -492,6 +718,7 @@ static struct clk *clk_wzrd_register_divider(struct device *dev, u8 shift, u8 width, u8 clk_divider_flags, u32 div_type, + bool is_versal, spinlock_t *lock) { struct clk_wzrd_divider *div; @@ -520,6 +747,7 @@ static struct clk *clk_wzrd_register_divider(struct device *dev, div->width = width; div->flags = clk_divider_flags; div->lock = lock; + div->is_versal = is_versal; div->hw.init = &init; hw = &div->hw; @@ -588,18 +816,34 @@ static int __maybe_unused clk_wzrd_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(clk_wzrd_dev_pm_ops, clk_wzrd_suspend, clk_wzrd_resume); +static const struct versal_clk_data versal_data = { + .is_versal = true, +}; + +static const struct of_device_id clk_wzrd_ids[] = { + { .compatible = "xlnx,versal-clk-wizard", .data = &versal_data }, + { .compatible = "xlnx,clocking-wizard" }, + { .compatible = "xlnx,clocking-wizard-v5.2" }, + { .compatible = "xlnx,clocking-wizard-v6.0" }, + { }, +}; +MODULE_DEVICE_TABLE(of, clk_wzrd_ids); + static int clk_wzrd_probe(struct platform_device *pdev) { + const char *clkout_name, *clk_name, *clk_mul_name; + u32 regl, regh, edge, regld, reghd, edged, div; + const struct versal_clk_data *data; + const struct of_device_id *match; int i, ret; u32 reg, reg_f, mult; unsigned long rate; - const char *clk_name; void __iomem *ctrl_reg; struct clk_wzrd *clk_wzrd; - const char *clkout_name; struct device_node *np = pdev->dev.of_node; int nr_outputs; unsigned long flags = 0; + bool is_versal = 0; clk_wzrd = devm_kzalloc(&pdev->dev, sizeof(*clk_wzrd), GFP_KERNEL); if (!clk_wzrd) @@ -647,27 +891,61 @@ static int clk_wzrd_probe(struct platform_device *pdev) goto err_disable_clk; } + match = of_match_node(clk_wzrd_ids, np); + if (!match) { + dev_err(&pdev->dev, "of_match_node failed\n"); + ret = -ENODEV; + goto err_disable_clk; + } + + data = match->data; + if (data) + is_versal = data->is_versal; + clkout_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_out0", dev_name(&pdev->dev)); if (nr_outputs == 1) { clk_wzrd->clkout[0] = clk_wzrd_register_divider (&pdev->dev, clkout_name, __clk_get_name(clk_wzrd->clk_in1), 0, - clk_wzrd->base, WZRD_CLK_CFG_REG(3), + clk_wzrd->base, WZRD_CLK_CFG_REG(is_versal, 3), WZRD_CLKOUT_DIVIDE_SHIFT, WZRD_CLKOUT_DIVIDE_WIDTH, CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, - DIV_ALL, &clkwzrd_lock); + DIV_ALL, is_versal, &clkwzrd_lock); goto out; } - - reg = readl(clk_wzrd->base + WZRD_CLK_CFG_REG(0)); - reg_f = reg & WZRD_CLKFBOUT_FRAC_MASK; - reg_f = reg_f >> WZRD_CLKFBOUT_FRAC_SHIFT; - - reg = reg & WZRD_CLKFBOUT_MULT_MASK; - reg = reg >> WZRD_CLKFBOUT_MULT_SHIFT; - mult = (reg * 1000) + reg_f; + if (is_versal) { + /* register multiplier */ + edge = !!(readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 0)) & + BIT(8)); + regl = (readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 1)) & + WZRD_CLKFBOUT_L_MASK) >> WZRD_CLKFBOUT_L_SHIFT; + regh = (readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 1)) & + WZRD_CLKFBOUT_H_MASK) >> WZRD_CLKFBOUT_H_SHIFT; + mult = regl + regh + edge; + if (!mult) + mult = 1; + mult = mult * WZRD_FRAC_GRADIENT; + + regl = readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 51)) & + WZRD_CLKFBOUT_FRAC_EN; + if (regl) { + regl = readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 48)) & + WZRD_VERSAL_FRAC_MASK; + mult = mult + regl; + } + div = 64; + } else { + reg = readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 0)); + reg_f = reg & WZRD_CLKFBOUT_FRAC_MASK; + reg_f = reg_f >> WZRD_CLKFBOUT_FRAC_SHIFT; + + reg = reg & WZRD_CLKFBOUT_MULT_MASK; + reg = reg >> WZRD_CLKFBOUT_MULT_SHIFT; + mult = (reg * 1000) + reg_f; + div = 1000; + } clk_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_mul", dev_name(&pdev->dev)); if (!clk_name) { ret = -ENOMEM; @@ -676,7 +954,7 @@ static int clk_wzrd_probe(struct platform_device *pdev) clk_wzrd->clks_internal[wzrd_clk_mul] = clk_register_fixed_factor (&pdev->dev, clk_name, __clk_get_name(clk_wzrd->clk_in1), - 0, mult, 1000); + 0, mult, div); if (IS_ERR(clk_wzrd->clks_internal[wzrd_clk_mul])) { dev_err(&pdev->dev, "unable to register fixed-factor clock\n"); ret = PTR_ERR(clk_wzrd->clks_internal[wzrd_clk_mul]); @@ -689,13 +967,29 @@ static int clk_wzrd_probe(struct platform_device *pdev) goto err_rm_int_clk; } - ctrl_reg = clk_wzrd->base + WZRD_CLK_CFG_REG(0); - /* register div */ - clk_wzrd->clks_internal[wzrd_clk_mul_div] = clk_register_divider + if (is_versal) { + edged = !!(readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 20)) & + BIT(10)); + regld = (readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 21)) & + WZRD_CLKFBOUT_L_MASK) >> WZRD_CLKFBOUT_L_SHIFT; + reghd = (readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 21)) & + WZRD_CLKFBOUT_H_MASK) >> WZRD_CLKFBOUT_H_SHIFT; + div = (regld + reghd + edged); + if (!div) + div = 1; + + clk_mul_name = __clk_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]); + clk_wzrd->clks_internal[wzrd_clk_mul_div] = + clk_register_fixed_factor(&pdev->dev, clk_name, + clk_mul_name, 0, 1, div); + } else { + ctrl_reg = clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 0); + clk_wzrd->clks_internal[wzrd_clk_mul_div] = clk_register_divider (&pdev->dev, clk_name, __clk_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]), flags, ctrl_reg, 0, 8, CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, &clkwzrd_lock); + } if (IS_ERR(clk_wzrd->clks_internal[wzrd_clk_mul_div])) { dev_err(&pdev->dev, "unable to register divider clock\n"); ret = PTR_ERR(clk_wzrd->clks_internal[wzrd_clk_mul_div]); @@ -711,24 +1005,35 @@ static int clk_wzrd_probe(struct platform_device *pdev) goto err_rm_int_clk; } - if (!i) - clk_wzrd->clkout[i] = clk_wzrd_register_divf - (&pdev->dev, clkout_name, - clk_name, flags, - clk_wzrd->base, (WZRD_CLK_CFG_REG(2) + i * 12), - WZRD_CLKOUT_DIVIDE_SHIFT, - WZRD_CLKOUT_DIVIDE_WIDTH, - CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, - DIV_O, &clkwzrd_lock); - else + if (is_versal) { clk_wzrd->clkout[i] = clk_wzrd_register_divider - (&pdev->dev, clkout_name, - clk_name, 0, - clk_wzrd->base, (WZRD_CLK_CFG_REG(2) + i * 12), - WZRD_CLKOUT_DIVIDE_SHIFT, - WZRD_CLKOUT_DIVIDE_WIDTH, - CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, - DIV_O, &clkwzrd_lock); + (&pdev->dev, + clkout_name, clk_name, 0, + clk_wzrd->base, + (WZRD_CLK_CFG_REG(is_versal, 3) + i * 8), + WZRD_CLKOUT_DIVIDE_SHIFT, + WZRD_CLKOUT_DIVIDE_WIDTH, + CLK_DIVIDER_ONE_BASED | + CLK_DIVIDER_ALLOW_ZERO, + DIV_O, true, &clkwzrd_lock); + } else { + if (!i) + clk_wzrd->clkout[i] = clk_wzrd_register_divf + (&pdev->dev, clkout_name, clk_name, flags, clk_wzrd->base, + (WZRD_CLK_CFG_REG(is_versal, 2) + i * 12), + WZRD_CLKOUT_DIVIDE_SHIFT, + WZRD_CLKOUT_DIVIDE_WIDTH, + CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, + DIV_O, &clkwzrd_lock); + else + clk_wzrd->clkout[i] = clk_wzrd_register_divider + (&pdev->dev, clkout_name, clk_name, 0, clk_wzrd->base, + (WZRD_CLK_CFG_REG(is_versal, 2) + i * 12), + WZRD_CLKOUT_DIVIDE_SHIFT, + WZRD_CLKOUT_DIVIDE_WIDTH, + CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, + DIV_O, false, &clkwzrd_lock); + } if (IS_ERR(clk_wzrd->clkout[i])) { int j; @@ -793,14 +1098,6 @@ static void clk_wzrd_remove(struct platform_device *pdev) clk_disable_unprepare(clk_wzrd->axi_clk); } -static const struct of_device_id clk_wzrd_ids[] = { - { .compatible = "xlnx,clocking-wizard" }, - { .compatible = "xlnx,clocking-wizard-v5.2" }, - { .compatible = "xlnx,clocking-wizard-v6.0" }, - { }, -}; -MODULE_DEVICE_TABLE(of, clk_wzrd_ids); - static struct platform_driver clk_wzrd_driver = { .driver = { .name = "clk-wizard",