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clk: imx: Use imx_mmdc_mask_handshake() API for masking MMDC channel 

Use imx_mmdc_mask_handshake() API instead of programming CCM
register directly in each platform to mask unused MMDC channel's
handshake.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Anson Huang 2019-05-12 10:24:19 +00:00 committed by Shawn Guo
parent efdb279033
commit c129b6fe81
5 changed files with 5 additions and 26 deletions
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13
drivers/clk/imx/clk-imx6q.c
View File

@ -260,25 +260,14 @@ static bool pll6_bypassed(struct device_node *node)
return false;
}
#define CCM_CCDR 0x04
#define CCM_CCSR 0x0c
#define CCM_CS2CDR 0x2c
#define CCDR_MMDC_CH1_MASK BIT(16)
#define CCSR_PLL3_SW_CLK_SEL BIT(0)
#define CS2CDR_LDB_DI0_CLK_SEL_SHIFT 9
#define CS2CDR_LDB_DI1_CLK_SEL_SHIFT 12
static void __init imx6q_mmdc_ch1_mask_handshake(void __iomem *ccm_base)
{
unsigned int reg;
reg = readl_relaxed(ccm_base + CCM_CCDR);
reg |= CCDR_MMDC_CH1_MASK;
writel_relaxed(reg, ccm_base + CCM_CCDR);
}
/*
* The only way to disable the MMDC_CH1 clock is to move it to pll3_sw_clk
* via periph2_clk2_sel and then to disable pll3_sw_clk by selecting the
@ -651,7 +640,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
disable_anatop_clocks(anatop_base);
imx6q_mmdc_ch1_mask_handshake(base);
imx_mmdc_mask_handshake(base, 1);
if (clk_on_imx6qp()) {
clk[IMX6QDL_CLK_LDB_DI0_SEL] = imx_clk_mux_flags("ldb_di0_sel", base + 0x2c, 9, 3, ldb_di_sels, ARRAY_SIZE(ldb_di_sels), CLK_SET_RATE_PARENT);

5
drivers/clk/imx/clk-imx6sl.c
View File

@ -17,8 +17,6 @@
#include "clk.h"
#define CCDR 0x4
#define BM_CCM_CCDR_MMDC_CH0_MASK (1 << 17)
#define CCSR 0xc
#define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2)
#define CACRR 0x10
@ -414,8 +412,7 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
clks[IMX6SL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8);
/* Ensure the MMDC CH0 handshake is bypassed */
writel_relaxed(readl_relaxed(base + CCDR) |
BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);
imx_mmdc_mask_handshake(base, 0);
imx_check_clocks(clks, ARRAY_SIZE(clks));

3
drivers/clk/imx/clk-imx6sll.c
View File

@ -16,7 +16,6 @@
#include "clk.h"
#define CCM_ANALOG_PLL_BYPASS (0x1 << 16)
#define BM_CCM_CCDR_MMDC_CH0_MASK (0x2 << 16)
#define xPLL_CLR(offset) (offset + 0x8)
static const char *pll_bypass_src_sels[] = { "osc", "dummy", };
@ -340,7 +339,7 @@ static void __init imx6sll_clocks_init(struct device_node *ccm_node)
clks[IMX6SLL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6);
/* mask handshake of mmdc */
writel_relaxed(BM_CCM_CCDR_MMDC_CH0_MASK, base + 0x4);
imx_mmdc_mask_handshake(base, 0);
imx_check_clocks(clks, ARRAY_SIZE(clks));

5
drivers/clk/imx/clk-imx6sx.c
View File

@ -22,9 +22,6 @@
#include "clk.h"
#define CCDR 0x4
#define BM_CCM_CCDR_MMDC_CH0_MASK (0x2 << 16)
static const char *step_sels[] = { "osc", "pll2_pfd2_396m", };
static const char *pll1_sw_sels[] = { "pll1_sys", "step", };
static const char *periph_pre_sels[] = { "pll2_bus", "pll2_pfd2_396m", "pll2_pfd0_352m", "pll2_198m", };
@ -488,7 +485,7 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
clks[IMX6SX_CLK_CKO2] = imx_clk_gate("cko2", "cko2_podf", base + 0x60, 24);
/* mask handshake of mmdc */
writel_relaxed(BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);
imx_mmdc_mask_handshake(base, 0);
imx_check_clocks(clks, ARRAY_SIZE(clks));

5
drivers/clk/imx/clk-imx6ul.c
View File

@ -22,9 +22,6 @@
#include "clk.h"
#define BM_CCM_CCDR_MMDC_CH0_MASK (0x2 << 16)
#define CCDR 0x4
static const char *pll_bypass_src_sels[] = { "osc", "dummy", };
static const char *pll1_bypass_sels[] = { "pll1", "pll1_bypass_src", };
static const char *pll2_bypass_sels[] = { "pll2", "pll2_bypass_src", };
@ -464,7 +461,7 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
clks[IMX6UL_CLK_CKO2] = imx_clk_gate("cko2", "cko2_podf", base + 0x60, 24);
/* mask handshake of mmdc */
writel_relaxed(BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);
imx_mmdc_mask_handshake(base, 0);
imx_check_clocks(clks, ARRAY_SIZE(clks));