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drivers: rkflash: support setting sfc clk by dts

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1.Max sfc sclk frequency 150MHz, io clk 75MHz;
2,Set sclk depends on dts setting.

Change-Id: I52ac3bd1359cef2198806f88887fc8eb0a383eba
Signed-off-by: Dingqiang Lin <jon.lin@rock-chips.com>
This commit is contained in:
Dingqiang Lin 2018-08-14 16:51:35 +08:00 committed by Tao Huang
parent 6853e9bdab
commit b20b2fd589
1 changed files with 6 additions and 3 deletions
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9
drivers/rkflash/rksfc_base.c
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@ -21,8 +21,8 @@
#include "rkflash_api.h"
#include "rkflash_blk.h"
#define RKSFC_VERSION_AND_DATE "rksfc_base v1.1 2016-01-08"
#define RKSFC_CLK_SET_RATE (100 * 1000 * 1000)
#define RKSFC_VERSION_AND_DATE "rksfc_base v1.1 2016-01-08"
#define RKSFC_CLK_MAX_RATE (150 * 1000 * 1000)
struct rksfc_info {
void __iomem *reg_base;
@ -138,8 +138,11 @@ static int rksfc_probe(struct platform_device *pdev)
return -1;
}
clk_prepare_enable(g_sfc_info.ahb_clk);
clk_set_rate(g_sfc_info.clk, RKSFC_CLK_SET_RATE);
g_sfc_info.clk_rate = clk_get_rate(g_sfc_info.clk);
if (g_sfc_info.clk_rate > RKSFC_CLK_MAX_RATE) {
clk_set_rate(g_sfc_info.clk, RKSFC_CLK_MAX_RATE);
g_sfc_info.clk_rate = clk_get_rate(g_sfc_info.clk);
}
clk_prepare_enable(g_sfc_info.clk);
dev_info(&pdev->dev,
"%s clk rate = %d\n",