hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

clk: imx6sl: ensure MMDC CH0 handshake is bypassed 

Same as other i.MX6 SoCs, ensure unused MMDC channel's
handshake is bypassed, this is to make sure no request
signal will be generated when periphe_clk_sel is changed
or SRC warm reset is triggered.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Anson Huang 2018-11-30 07:23:47 +00:00 committed by Stephen Boyd
parent ea662d2f80
commit 0efcc2c0fd
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/clk/imx/clk-imx6sl.c
View File

@ -17,6 +17,8 @@
#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
@ -411,6 +413,10 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
clks[IMX6SL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6);
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_check_clocks(clks, ARRAY_SIZE(clks));
clk_data.clks = clks;