diff options
-rw-r--r-- | drivers/soc/fsl/qe/qe.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index d9c04f588f7f..31a094573a9d 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c | |||
@@ -161,11 +161,15 @@ EXPORT_SYMBOL(qe_issue_cmd); | |||
161 | */ | 161 | */ |
162 | static unsigned int brg_clk = 0; | 162 | static unsigned int brg_clk = 0; |
163 | 163 | ||
164 | #define CLK_GRAN (1000) | ||
165 | #define CLK_GRAN_LIMIT (5) | ||
166 | |||
164 | unsigned int qe_get_brg_clk(void) | 167 | unsigned int qe_get_brg_clk(void) |
165 | { | 168 | { |
166 | struct device_node *qe; | 169 | struct device_node *qe; |
167 | int size; | 170 | int size; |
168 | const u32 *prop; | 171 | const u32 *prop; |
172 | unsigned int mod; | ||
169 | 173 | ||
170 | if (brg_clk) | 174 | if (brg_clk) |
171 | return brg_clk; | 175 | return brg_clk; |
@@ -183,6 +187,15 @@ unsigned int qe_get_brg_clk(void) | |||
183 | 187 | ||
184 | of_node_put(qe); | 188 | of_node_put(qe); |
185 | 189 | ||
190 | /* round this if near to a multiple of CLK_GRAN */ | ||
191 | mod = brg_clk % CLK_GRAN; | ||
192 | if (mod) { | ||
193 | if (mod < CLK_GRAN_LIMIT) | ||
194 | brg_clk -= mod; | ||
195 | else if (mod > (CLK_GRAN - CLK_GRAN_LIMIT)) | ||
196 | brg_clk += CLK_GRAN - mod; | ||
197 | } | ||
198 | |||
186 | return brg_clk; | 199 | return brg_clk; |
187 | } | 200 | } |
188 | EXPORT_SYMBOL(qe_get_brg_clk); | 201 | EXPORT_SYMBOL(qe_get_brg_clk); |