linux-kernel - [PATCH v2 2/6] MIPS: ralink: drop ralink_clk

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Message-Id: <20190724022310.28010-3-gch981213@gmail.com>
Date:   Wed, 24 Jul 2019 10:23:06 +0800
From:   Chuanhong Guo <gch981213@...il.com>
To:     linux-clk@...r.kernel.org (open list:COMMON CLK FRAMEWORK),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list),
        linux-mips@...r.kernel.org (open list:MIPS),
        devel@...verdev.osuosl.org (open list:STAGING SUBSYSTEM)
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        John Crispin <john@...ozen.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Weijie Gao <hackpascal@...il.com>, NeilBrown <neil@...wn.name>,
        Chuanhong Guo <gch981213@...il.com>
Subject: [PATCH v2 2/6] MIPS: ralink: drop ralink_clk_init for mt7621

This function isn't called anywhere. just drop it.

Signed-off-by: Chuanhong Guo <gch981213@...il.com>
---
Change since v1:
New patch. Split from:
  "MIPS: ralink: fix cpu clock of mt7621 and add dt clk devices"

 arch/mips/ralink/mt7621.c | 43 ---------------------------------------
 1 file changed, 43 deletions(-)

diff --git a/arch/mips/ralink/mt7621.c b/arch/mips/ralink/mt7621.c
index 9415be0d57b8..ba39f3f3a7c7 100644
--- a/arch/mips/ralink/mt7621.c
+++ b/arch/mips/ralink/mt7621.c
@@ -18,11 +18,6 @@
 
 #include "common.h"
 
-#define SYSC_REG_SYSCFG		0x10
-#define SYSC_REG_CPLL_CLKCFG0	0x2c
-#define SYSC_REG_CUR_CLK_STS	0x44
-#define CPU_CLK_SEL		(BIT(30) | BIT(31))
-
 #define MT7621_GPIO_MODE_UART1		1
 #define MT7621_GPIO_MODE_I2C		2
 #define MT7621_GPIO_MODE_UART3_MASK	0x3
@@ -113,44 +108,6 @@ phys_addr_t mips_cpc_default_phys_base(void)
 	panic("Cannot detect cpc address");
 }
 
-void __init ralink_clk_init(void)
-{
-	int cpu_fdiv = 0;
-	int cpu_ffrac = 0;
-	int fbdiv = 0;
-	u32 clk_sts, syscfg;
-	u8 clk_sel = 0, xtal_mode;
-	u32 cpu_clk;
-
-	if ((rt_sysc_r32(SYSC_REG_CPLL_CLKCFG0) & CPU_CLK_SEL) != 0)
-		clk_sel = 1;
-
-	switch (clk_sel) {
-	case 0:
-		clk_sts = rt_sysc_r32(SYSC_REG_CUR_CLK_STS);
-		cpu_fdiv = ((clk_sts >> 8) & 0x1F);
-		cpu_ffrac = (clk_sts & 0x1F);
-		cpu_clk = (500 * cpu_ffrac / cpu_fdiv) * 1000 * 1000;
-		break;
-
-	case 1:
-		fbdiv = ((rt_sysc_r32(0x648) >> 4) & 0x7F) + 1;
-		syscfg = rt_sysc_r32(SYSC_REG_SYSCFG);
-		xtal_mode = (syscfg >> 6) & 0x7;
-		if (xtal_mode >= 6) {
-			/* 25Mhz Xtal */
-			cpu_clk = 25 * fbdiv * 1000 * 1000;
-		} else if (xtal_mode >= 3) {
-			/* 40Mhz Xtal */
-			cpu_clk = 40 * fbdiv * 1000 * 1000;
-		} else {
-			/* 20Mhz Xtal */
-			cpu_clk = 20 * fbdiv * 1000 * 1000;
-		}
-		break;
-	}
-}
-
 void __init ralink_of_remap(void)
 {
 	rt_sysc_membase = plat_of_remap_node("mtk,mt7621-sysc");
-- 
2.21.0